I started storing my Spellbinder dies in CD jewel cases bought at Staples. (Not the slim kind, though) I used magnetic sheets from Oriental Trading and cut them to size. I labeled the cases and stored them in file boxes bought at Walmart. The dies stayed securely in place, but the sheets were not adhesive backed and they slid a little in the case and could fall out if the case was opened quickly. NOW Oriental Trading sells full size, adhesive backed sheets. I can get 4 cases lined from one sheet, AND now I can adhere a second sheet on the other side of the case...so for eg. Classic ovals large and Classic ovals small can go in the same case. Fewer cases needed! Space for more sets!! Gotta shop!