If you’ve got a tree in your yard strong enough to support a tree house, get the children in your family involved in helping you create a design for a tree house, shop for the wood and nails (and all the other construction materials you’ll need), and build it. Not only will the children love you for building something that will surely give them many hours of fun memories, but you’ll be creating a special space where you can share your inner child with the children in your life!