My fav of Pats ideas are the fighting platform (dojo) maybe an honor mode also
Guild location (exclusive to guilds?)
Chalkboard!,!

If y’all do the carts in the house thing then how about a furniture like a wall or pilot that is solid. Then ppl can make racetracks that can be used.

A punching dummy with static stats that we can attack and test gear and skills on.
Ghosts that randomly appear/disappear
Pet bowl that tethers a pet in house/guild who chills n randomly goes through play/trick animation