I found a great storage solution for our art supplies and wanted to share. I bought the Better Homes and garden flip-tite containers in the following sizes and they work perfectly!
4.5 cup used for crayons
http://www.walmart.com/ip/Better-Hom...ainer/16332463
7.5 cup used for colored pencils
http://www.walmart.com/ip/Better-Hom...ainer/16332464
11.5 cup rectangle for markers
http://www.walmart.com/ip/Better-Hom...ainer/16332467
(I'm not 100% sure this is the exact size I bought...it looks bigger in the picture, but it is the smallest rectangle size they have)
Can't speak to the durability, but my once cluttered to the point of being unusable art cabinet is now beautiful!!!