Slimeball (5e Creature)
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Tiny ooze, unaligned
Bouncy. The slimeball takes no damage from falling or from being thrown. When it falls or is thrown against a wall, it returns to its original position.
A slimeball has no effective attacks. They are harmless oozes no bigger than a frog that are sometimes kept as pets. They eat little bugs and flies that blunder into its sticky body, but can also be fed detritus, or sent up to rafters to clean out cobwebs. They can be any color, and have one or two simple eyes that lend them an endearing quality. At the DM's option, a creature that casts the find familiar spell can conjure a slimeball instead of one of the other options.
Ooze Nature. A slimeball doesn't require sleep.