Here's a box I made. Easy to do, it used Peltex I think it's called, really thick interfacing type stuff and Misty Fuse, a new to me, very light weight fusible that doesn't gum up the needle. This box has 5 or 6 layers of the Misty Fuse. You iron it down using parchment paper on top - it really gums up the bottom of the iron though, if you happen to iron over an unprotected spot.