I needed a way to both practice and to have some kind of encyclopedia of the tangles that I use. So now, I use these tangle trading cards. I‘m not sure exactly where this design came from, but I‘m sure if you look on the internet you can find something that will work for you. These are set up on an 8-1/2″ by 11″ format, 9 cards to the page, in a .pdf file on my computer so I can print them out on inexpensive card stock whenever I need more.