Cantrip Bubbles
Magic Users start with five bubbles to cast cantrips with. A cantrip should be weaker than a 1st level spell and be minorly useful. If damage is desired it is limited to 1 point of damage and also deals a point of damage to the caster. Cantrips are fickle when wrangled to do harm. Slots can be recharged by a good night's rest with proper food or by draining 100gp worth of value from gems for every bubble restored. Magic Users gain two bubbles with every level.
Crust Fizzlestink uses a cantrip bubble to conjure mend his broken waterskin.
Blast the Goblin Wizard uses a bubble to conjure a candle that will last for a single dungeon turn.
Gubbles uses a bubble to graffiti a truly vulgar rendition of a gnoll defecating on the party's thief.