I know that ArtBin has created "strip" satchels now. I've seen them at JoAnns (
http://www.joann.com/artbin-transluc...F-D0F665A1B291) and they are at WalMart (
https://www.walmart.com/ip/ArtBin-Fa...ucent/46260900).
JoAnns is having a sale online.