I bought Sterilite plastic see through boxes with hinged lids from Mennards. Each box measures 7 5/8"L x 6 1/2" W x 4 l/2"H for less than $1.97 each. The box I'm looking at now will hold 8 complete charm packs so that 338 squares. I can do these by color, print types, or manufacturer. Love having these, and I can stack them on a shelf or place in a drawer.