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. Children will delight in creating their own original creations. 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.