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 noodle javelin, or use the target for frisbies or balls. To make: duct tape 6 rings to one another than tape to thicker in wide hollow pool noodle for post hammer 2 in dowels 48 in long into ground slide pool noodle on top