A typical dutch childs game, called "cookiebiting". The first to finish wins.
Summer Activities for Kids Series: Water Gun Fun by tanisha
bbq for kids - moodkids food
OUTDOOR SPACE GAME IDEAS: 50 outdoor summer activities for your kids to check off! A bike obstacle course, a water balloon pinata and glow in the dark bowling sound like tons of fun to me!
Mud Run Birthday Party - Inspired by the Warrior Dash, an obstacle course for the boys. other boys party themes/ideas on this site as well)