Kids activities for Summer!?

My friends and I are doing a little camp in our backyard for baby-7 years old. The camp has been incredibly successful so far and tomorrow we are having a huge amount of kids-the biggest yet. The only thing is that we have run out of activities to do! any ideas for activities/games? Thanks. p.s. we have already made capes, visors, crowns, done face paint, made playdough, slime, and lemonade.