I was thinking of a pet, possibly a cat because they bring comfort irl that when fed, maybe a special item i.e. catnip, fish fingers etc, they provide the player with healing and luck for a short while. Obviously, this couldn't be done too often as it would provide the player with an OP boost. But getting comfort (health) like a cat does irl would be pretty cool.

I would like to point out that we do have the /pets command with several available pets for Dryad+ ranks. One of the pets, the panda, gives you constant saturation regeneration which is basically allowing constant always on healing not needing to eat.