Although my eyeballs were plastered to LCDs for the majority of E3, I managed to take some breaks and head on over to the merch booths. I picked myself up one of these DS Lite organizers, which caught my eye from their resemblance to the one that comes with the lime green DS bundle. Brought to you by Power A, who makes tons of portable gaming accessories, you can get your own case from Target (my fave), Best Buy, and even Kmart.
The tri-fold organizers not only hold your DS, but three game cartridges, and some extra styli just in case. Although I haven't seen these in my Target (trust me, I'd know), I did find them online for $15 bucks.