Iris Folding with Envelopes Author:Maruscha Gaasenbeek, Tine Beauveser Iris Folding with Envelopes: All new patterns that include a sail boat, pin wheel, tea pot, triangle, butterflies, kite, balloon and more. Iris folding is a wonderful and easy way to make very unique cards. You use only small strips of folded paper. All you need is the book to follow the patterns.