Dying while turning to slime (but not dying BY turning to slime) leaves behind a large glob of green slime instead of a corpse in your bones file.

If a monster with an associated glob comes into contact with it (by moving onto it, or if someone hits it with the glob) it absorbs the glob and heals HP proportional to the glob’s weight. If this would heal it beyond its max HP, it gains a point of max HP.

Because green slime is so flammable, there should be some way to use globs of it as lamp fuel.

When a pudding moves onto a square containing a glob of its own type, it absorbs the glob and gains HP.

Handling a cursed glob of green slime (picking it up, throwing it, etc) makes it start to slime you, using itself up in the process.

You can somehow weaponize globs of green slime to forcibly transform other monsters into slime. Possibly this could be as simple as throwing or flinging the globs at them, perhaps subject to a monster magic resistance check for the transformation to work.

Pudding globs that fall onto a sink slide down the drain and disappear.