We have a group of 4 neighborhood boys who will be playing together this summer— all have minimal contact with others and we as parents have agreed to allow them to play this summer. I want to limit their indoor time as much as possible because they can get pretty loud and wild, but I need ideas for outside activities. Ages range from 8-10 years. We have a trampoline and water fights are already on the top of the list. We don’t have a huge yard, about 1/4 acre. Outdoor bowling? What else?