I use Quickutz Magnetic Folders...one holds all the sizes both plain and scalloped of an entire shape...and then some. Like my circles one holds all 4 sets of plain and scallop, plus two pinking circles. And then I have one for tags and such, and one for only label nesties. I like that I can open it up and see all of the sizes at once, I don't have to dig out extra containers to compare with the small or large from each set. And they are easy to get into, and take up little space. I have about a dozen, and they take up less than 5 inches of a bookcase shelf.
I had a pic somewhere, but can't find it! Maybe when I get home tonight I can do new ones!