I seriously use these CONSTANTLY. You can put a sheet of paper with a bunch of dies on it at one time and cut out 6 or 7 shapes in one go. Store them in a drawer so you can pull them out and use them later, it's a great thing to do with scraps! Then you can just throw the paper away after you've die cut all the usable space out of it. Saves paper and also makes shapes usable on any project.
Love all the Spellbinders - Nestabilities.. They work great with the Cuttlebug Machine. No need to buy another machine if you already have a Cuttlebug. Very easy to use. If you buy the scalloped edges ~ you will also want to get the smooth edges for layering.