Ages 8-10 This is the age where things can get turned up a notch. At this point, they probably have a steady group of friends that they know really well, and they start to take more of an interest in adult-like activities while still loving the games of childhood. Backyard water Olympics party Go-kart racing party Tie-dye t-shirt-making party Water park party Backyard movie party Ice cream-making party Tropical vacation party Mystery/neighborhood scavenger hunt party Backyard concert party Image Source: Flickr user Tom Kelly