Here are some quintuple steps I made for the kids in the backyard since they love American Ninja Warrior. These are made with pallets, flat scrap wood for the tops (you could use plywood and even have Home Depot or Lowes cut them to size), and 2'x4's / 2'x6's for the legs (I used scrap wood, so some legs are 4 and others are 6). Let me know if you have any questions.
