Simple idea:
Purchasable pets for RP. Basically just an item that lets you 1/day summon an animal with 0 mechanical benefit. Choices could include:
Cat
Dog
Rabbit
Bird
Chicken
Toad
Pig
Baby Cow
Spider
Snake
And maybe some UD-specific ones:
Baby Rothe
Goblin Slave
Kobold Slave
Halfing Slave
Spitting Crawler