I've got an idea. Maybe it's been mentioned before, but I'd like to bring it up. I think building balls, ( soccer balls, basketballs, beach balls, etc. ) and making them playable with items, in-game, would be fun. A sporty thing. Friends could field balls from each other's goal post's in- game, in their houses. They could chase them. Kick them. Score with them. It'd be so awesome. It'd be an entertainment thing. For fun.
I've been thinking about it for some time, and I really don't know how complicated it'd be to build, but, it sure would be an interesting and a fun thing to do. It could just be casual- kicking around beach balls with pals at home, but, it could be fun.