I got a bag like this in the Christmas (guild) gift exchange. Several wanted to know how it was made, so I said I'd copy it, write down the instructions, and share it with them. The bag opens out flat when the zippers are opened on the sides--I think it would work well to care a quilt to guild's show and tell (using it like a log carrier). It had a lot of pockets, including a "flap" on the inside with more pockets. It will work well for crafts as well as for quilts! This one will be contributed to our spring auction, which is a major fund raiser for the guild.
I decorated the outsides with orphan blocks.