This kit as made for many hours of #screenfree independent creative kid play! Last minute gift idea hack! Make your own DIY Invention Kit! We used a simple 3-tier metal rolling cart and stocked it with a variety of items from the hardware store: - cotton rope - small pulley - clips - hooks - rubber bands - velcro - pieces of lightweight chain - magnets - small bungee cords - random items from around the house like springs, key chains and mason jar lids Great screen free play option!