Hello! First of all, if you store your WIPS in plastic, make sure you punch holes in the bags so your fabric can breathe! Better still, store in old pillow cases in open bins so the fabrics can breathe but will be protected from the light. You can "string" your small pieces on a long double thread with a button on the bottom of the stack to keep them from slipping off the bottom. Or, use paper mailing envelopes, size 5x7 or 8x10 to corrall the small things. If you use small plastic bins from a cheap dollar store, punch holes around the top by heating an ice pick in a candle flame and punching holes around the top edge of the bin. That will let air in. Pizza boxes are also nice to store projects in for a short time. If you intend to use the boxes for long-term storage, line them with scrap fabric to keep your good fabric from touching the cardboard. Storing in cardboard(wood byproduct) or on an unstreated shelf or in a cedar chest will cause brown stains on your fabric if left for a long time.