I recently picked up this great iPad bag made by Keen (who also make my favorite footwear). Personally I think it’s overpriced, but I got it at a good deal and have to say I really like the bag. The one thing I wanted to go along with it was a good old analog sketchbook that fit it alongside the iPad. I found this softcover Moleskine notebook/sketchbook that fits in perfectly alongside the iPad. A nice little combo for all you iPad-owning artists out there.
The bag is simple, has one front pouch/pocket with a zipper and a keyring carabiner, a slim back pouch, and a removable should strap; the sketchbook is similar to the hardcover versions (elastic band to keep closed, hassle bookmark) with a durable, flexible cover.