Love the Dancing Ooze! Psychic damage is a pretty good choice, and the dancing tentacles is great flavor.
A tiny creature is about a foot across, correct?
I'm imagining a further upgraded version of the static-orb line where the orb gets stuck into a magnetic harness thing that suspends it in a halo (or the halo around it) which has long retractable/folding blades sticking out of it, which can be revved up and swung in a whirlwind at everyone's ankles, or just used to trip up the players. Or maybe someone gets the bright idea of removing the blades from the halo and sticking it onto the end of a staff, turning it into a weapon with the Orb floating in the middle.
So I'm looking through the spells... ones that would make interesting living spells (Or maybe you could make contraptions called Spellbolts based on some spells!) look like... Chromatic Orb, Blade Barrier, and Reverse Gravity.
Possible descriptions...
Living Chromatic Orb A glowing ooze that keeps changing colors as it bounces around. The energy it gives off is palpable, but highly inconsistent; it's erratic movement is keeping with it's erratic shifting of color.
Living Blade Barrier The creature in front of you seems to be encased in razor sharp metal shards, which zip about it's surface at a blinding pace, only thinly veiling it's nature as an ooze. Even within, razors slide through it, cutting apart anything caught inside.
Reverse Gravity Spellbolt A foot-tall wind up doll built out of gears and bolts around a large central rusted blue screw. Engraved into the rust are runes which radiate outwards; however, the rest of it's mechanisms seem like they serve very little purpose, with mismatched gears and limbs, and parts that float in the air. The oddest part is how it walks on the ceiling without aid of any hooks. It drops down in front of you, forcing the loose debris on the floor to scatter and collect on the roof above you.