CTA Digital’s Game Locker is available for your Nintendo 3DS, Nintendo DSi XL, Nintendo DSi, and Nintendo DS Lite. It is a metal locker that has a carrying handle on top, fits up to 10 game boxes, storage space for your DS system at the bottom, comes with 1 pad lock, 2 keys, and 2 3DS cartridge cases. The 2 3DS cartridge cases together can hold 28 games, 4 micro SD cards, 4 SD cards, and 6 stylus. The Game Locker retails for $19.99.
