The following cantrips shouldn't be too unbalancing, even if you allow them to be cast at will for no cost.
Dazzle
Range: 10'
Area of Effect: 1 cubic foot
Duration: 1 round
This spell creates rapid flashes and bursts of
brightly colored lights within a small space. It has no other effect whatsoever, but is often used as a petty display of power to the easily impressed.
Drowse
Range: 50'
Area of Effect: 1 creature
Duration: Special
This spell instantly makes the target
feel sleepy, even if previously well-rested and wide awake. The
target may make a saving throw vs. spells to remain awake if
he considers it important or desirable to do so – for example, a
guard on duty. (A lazy guard who has no compunctions about falling asleep on duty is another story, though.) Otherwise, it will doze off within 1-10 minutes. A
formerly rested and alert subject will sleep for 4d6 minutes; an
already tired one will sleep 2d4 hours. Loud noises or physical
force will awaken the sleeper, however.
This spell has no effect whatsoever on characters
or creatures engaged in combat or other situations where falling
asleep would be harmful or fatal, such as climbing a ladder or
swimming. Creatures larger than an ogre are also unaffected. The most common use is as a remedy for insomnia, and the caster may target himself.
Dye
Range: Touch
Area of Effect: See below
Duration: Special
By use of this spell, the caster alters
the color of an item or creature, or part of one. The total surface
area that can be affected by a single casting is equal to about that of
an adult human. Thus, the caster could change the color of a
piece of fruit, a man-sized statue, a cat, or his own skin, hair, or
eyes. On non-living material, the effect lasts for 2d6 days or until
dispelled by a Dispel Magic or Remove Curse spell.
On living creatures, including the caster himself, the duration is 1d6
days, also subject to dispelling. Unwilling creatures get a saving
throw vs. spells to avoid the effect.
Evaporate/Condense
Range 10'
Area of Effect: A 5' cube
Duration: 1 turn
When this spell is cast, all water
within the area of effect begins to evaporate. Within 10 minutes, up
to 3 gallons will be vaporized. Evaporate is useful
for drying out a character's clothing after a rain or an unexpected
swim, preserving herbs and foods, and distilling liquids. Living creatures are not affected. The
reverse of the cantrip, Condense, will precipitate water vapor out of
the air, dampening everything within the area of effect.
Flame
Range: 10'
Area of Effect: Approximately 1 cubic
inch
Duration: 1 round
This spell causes a flame, equal in
heat, light, and intensity to a candle flame, to appear at the
caster's fingertip. It may either be held on the caster's finger for
the duration without harm, or flicked up to 10' away. The flame may
be used to light candle or lamp wicks or to ignite flammable
materials such as straw, tinder, or oil. The flame is not hot
enough to cause damage itself, but blazes ignited by it will. The
caster must be able to snap the fingers of one hand in order to cast
the spell.
Haunt
Range 50'
Area of Effect: n/a
Duration: 5 rounds
With a Haunt cantrip, the caster
produces eerie noises emanating from somewhere within the spell's
range. The sounds will be no louder than a soft human speaking
voice, and must be relatively simple. Bumps, taps, scratching,
groaning, or muttering are possible, but not music or intelligible speech.
Illusory Scent
Range: 20'
Area of Effect: A 10'x10'x10' cube
Duration: 1 turn
This spell causes a scent, chosen by
the caster, to fill the air in the affected area. The smell may be
pleasant, unpleasant, or neutral, but is otherwise harmless and does
not compel any action on the part of creatures smelling it, though it
may certainly influence them. Reactions to any particular scent are
at the referee's discretion.
Invisible Servant
Range: 20'
Area of Effect: Special
Duration: 1 turn
This cantrip calls into existence a
small, invisible force under the control of the caster. The force
can be used to manipulate objects weighing less than 1/2 pound, such
as a spoon, a feather duster, a candle, a pen, or a string. The
objects levitate as if held by an invisible hand, and can be moved at
a maximum speed of 10 feet per round. The caster may designate a
simple motion, such as sweeping, stirring, or the like, and the
object will continue it until the caster changes or ceases it or the
spell expires. The caster may also maintain direct control over the
object, if desired. When the spell expires, any object under its
influence will fall immediately, and suffers the usual effects – a
teacup dropped on a stone floor will shatter, etc. Items carried by
a person or creature are not affected by this spell.
Itch
Range: 20'
Area of Effect: One creature
Duration: Special
This cantrip inflicts a mild itching,
tickling, or similar minor irritating sensation on a creature within
range. The effect is not great enough to cause distraction in combat
or other dangerous situation. At any other time, the normal
inclination of an affected creature is to scratch the itch, which may
distract its attention or cause it to set aside objects held in hand.
Focusing this cantrip on the nose may cause the creature to
sneeze if a Constitution check is failed. This is especially
inconvenient to someone working with lightweight materials such as
powders or papers, or someone trying to hide or move quietly.
Magelight
Range: 0
Area of Effect: A 1'-diameter sphere
Duration: 10 rounds
A magelight cantrip creates a soft
light in a 1' sphere centered on the caster's hand. Within the
radius, the light is sufficient for reading or seeing similar
details. If desired, the caster may transfer the light from his hand
to another creature or object by touch, where it will remain for the
duration of the spell. Unwilling creatures are not affected.
Miniscule Transmutation
Range: Touch
Area of Effect: One item or creature
Duration: Special
With this cantrip, the caster causes
one small item or creature, weighing no more than 1/2 pound, to
change form. The transformation must be within the same kingdom,
i.e. animal to animal, vegetable to vegetable, or mineral to mineral.
A sheet of parchment might be changed to a handkerchief, a nettle to
a rose, a mouse to a frog, or a ring to a coin, for example. If the
change is from non-living material to living, such as turning a
leather glove into a bird, the duration is one minute. Otherwise, it
lasts one turn. An item or creature bearing an enchantment of any sort may not be affected.
Minor Illusion
Range: 5'
Area of Effect: A 1'-diameter sphere
Duration: Concentration
This spell creates a simple illusion
within the area of effect. For example, the caster could make butterflies appear to stream from
his mouth, a rainbow appear in the palm of his hand, or a hat on his
head. The effect lasts as long as the caster concentrates on it –
he cannot fight, cast other spells, or move more than half speed.
Anyone viewing the illusion may attempt a Wisdom check to recognize
it as such.
Prestidigitation
Range: 0 (Caster only)
Area of Effect: Special
Duration: Instantaneous
Prestidigitation enables the caster to
conjure a small item from anywhere on his person to appear in his
hand. A coin, a dagger, or a key, for example, may be brought to hand
in this way, provided that they are carried by the caster, either in
his clothing, a container such as a belt pouch or backpack, or even
his own body. A swallowed item may be easily retrieved in this way,
so long as it is a discrete unit – for example, a marble could be
retrieved, while a shot of liquor or a mouthful of sand could not.
Puff of Smoke
Range: 20'
Area of Effect: A 5' diameter sphere
Duration: 1 round
This spell conjures a burst of thick
smoke, about 5' across and of any color the caster desires. For the
first second or two of its duration, the smoke is completely opaque,
obscuring anything within or behind it. It thins quickly and
dissipates entirely at the end of the 1-round duration. A Puff of
Smoke is most commonly used for the purpose of misdirection, and for
theatrical entrances and exits.
Sense Magic
Range: 0 (Caster only)
Area of Effect: A 10' radius sphere,
centered on the caster
Duration: 1 round
This spell enables the caster to sense
the presence of magical enchantments within range. Only the
presence and general direction of the enchantment is sensed, not the specific kind or exact sources. Enchanted items,
active personal and area-effect spells, and magically summoned,
created, or sustained creatures can all be sensed by this spell. For
example, a mage casting the spell in a chamber where there is a
sentry statue guarding a chest which contains a potion of healing,
while in the presence of a fighter carrying an enchanted sword and a
cleric under the influence of a bless spell will sense magic coming
from the direction of each of them. However, he will not sense
whether the chest, its contents, the statue standing beside it, or
all three are the source of the magic coming from that direction, nor
whether the fighter and cleric are radiating magic because they are
carrying magic items or are under the effect of spells, or both.
Despite its imprecise results, the cantrip is often useful for quick
assessments of treasure hoards and the like.
Sorting
Range: 5'
Area of Effect: Special
Duration: 1 round per level
By means of this spell, the caster may
quickly sort small objects weighing no more than 1/2 pound. The
criteria for sorting must be able to be discerned by the caster's
unaided senses; for example, gold may be sorted from silver because
the difference is easily seen, or grains of salt from grains of sugar
because they may be distinguished by taste. Sorting gems by value or
separating magic items from non-magical ones is not possible, because
those properties cannot be determined by the senses alone. About 100 items may be sorted per round, so a pile of 1,000 coins of mixed
type would require 10 rounds to separate into piles of gold, silver,
and copper.
Warm/Cool
Range: Touch
Area of Effect: One item or container
Duration: 1 turn
This spell causes an object to either
become warmer or cooler, according to the wishes of the caster.
Temperature may not be raised above the boiling point of water, nor
lowered below freezing. The volume affected is a maximum of one
gallon per five levels of the caster, rounded up. The caster must concentrate to maintain the spell - in this case, the pot must be watched for it to boil! A full turn is needed to achieve freezing or boiling; the time required for lesser changes is at the DM's discretion. The object or liquid then gains or loses heat
at a natural rate until it once again matches the ambient temperature. The
spell is quite useful for cooking and brewing teas and infusions
where a fire is impossible or impractical. Living creatures may not
be directly affected by the spell, though they may be subsequently
affected by boiling or freezing liquids.
Whisper
Range: 10' per level
Area of Effect: One person or creature
Duration: Instantaneous
Through the use of this spell, the
caster may send a whispered message of five words or less to
another creature within range. The whisper cannot be heard or
intercepted by anyone other than its intended recipient.
Zephyr
Range: 50'
Area of Effect: A 5'x5'x5' cube
Duration: 1 round per level
By means of this spell, the caster
calls a soft breeze to blow across the area of his choosing. The
breeze is not strong enough to cause damage to structures or
creatures, but it will blow out candles, stir up dust, and scatter papers or parchments. The caster
may choose the direction of the breeze; if prevailing winds in the
area blow in another direction, they are negated within the area of
effect, but anything blown out of the spell area may be blow back in
once the spell expires. If there is a source of fresh air within
50', the breeze will be fresh; otherwise it will be no fresher than
the air in the caster's vicinity. Mages of all levels sometimes use
this spell for relief on hot or muggy days, or to whisk away the
fumes of alchemical experiments.