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.
How to Build Your Own American Ninja Warrior Training Course
Whether you're training to compete or just want to increase your fitness, you can do it in a fun way with the whole family on this DIY backyard American Ninja Warrior style training course! Details from GirlMeetsCarpenter