You can also take a old mouse pad and cut it up to place inside..
I liked the Pelican case but I was less than impressed with the inserts, so I borrowed YoGuRt99's idea and used an old mouse pad that I had laying around.
Now it's set up so it holds 1 3ml bottle of juice, 2 carts, 1 battery, 2 atty's, and the USB charger all nice and snug as a bug in a rug.
Here's a couple pictures of the finished product.