A Bigz die from Sizzix cleanly cuts thick materials, including cardstock, chipboard, fabric, foam, magnet, leather, metallic foil, pape... Full Description & Details.
I made some of these flowers with a young friend as soon as it arrived. I was surprised how big the finished flower was -- probably 5" in diameter. This is great for 12 x 12 scrapbook pages -- too big for most cards. The only drawback is cutting multiple sets of petals, but you can do several layers at once!