Terra kids connectors make a great DIY project for parents and grandparents to enjoy with children ages 8+. They include fun elements of learning mechanical engineering getting out into nature and of course inspiring creativity. The possibilities are endless! Please note: some designs call for the use of a hack saw and/or chisel (not included). Adult supervision should always be used when working with these utensils making this is a great way to teach your children the proper use of tools.