What are your ideas for group activities?

Activities for more than one sim requires a lot of animations, and they always say that animations are hard to do. Also, sims in TS4 don't seem to join in activities easily. I remember in TS2 my sims liked to start a game of kicky bag and everyone eventually joined in. I think it would be nice if there was an option to cook together cookies or something or to teach other sim how to cook.