In my Copic Christmas class today we were discussing ways to store the Spellbinder/Nestabilities dies. I wanted to post a link to the site where I got my Clear DVD cases. You'll need to scroll down the page to the item called "Super Jewel Box King DVD Case"
I got the idea from Becca Feeken's blog last summer and found it works really well for me. Click on the link to her blog for a great article with photos showing how to take the insert out and store your dies.
If you need magnetic sheets for your dies, I did order in a box of 5"x7" sheets that are self adhesive. They should be in by the end of the week.