Kids bday idea or camp challenge - obstacle course! Inspired by Tough Mudder - the Barbwire Crawl!
could do bug obstacle course DIY American Ninja Warrior Backyard Obstacle Course - Five different elements. Build and re-build this obstacle course, and then it breaks down for storage. Storage ideas in the post.
Pool water guns solo cups party celebration game Shared by Fireman's Finds
Squirt Gun Races: This elaborate obstacle course will be perfect for your next pool party. Your kids will love using squirt guns to move the cups across the pool.
Belly crawl for obstacle course - yarn strung around stakes pounded into grass w/rubber mallet
32 Of The Best DIY Backyard Games You Will Ever Play- backyard obstacle course.