I have been using these 3D foam squares in both sizes for years. Before I discovered them, I was putting small folded paper behind my photos to lift them off the page. The large squares are great for photos and larger embellishment. I use the smaller ones for lettering and stickers that I want to pop off the page. They are easy to use. Just make sure that to place the photo or item exactly where you want it or have a bottle of Un-Du near by. They stick extremely well. This is definitely a must have in every scrapbooker's supplies.
They are just the right size for my scrapbooking and card making. I have ordered them in the white and the black, small size, large size and the combo pack. When I use these at a crop or at demo day at our local scrapbook store, many people ask where I got them.