If you're getting the flash-memory cards from your digital camera and MP3 player mixed up all the time, the Memory Card Travel Case ($20) can help keep your bits organized. Developed by Digital Foci, known for digital photo albums and digital frames, the case holds and protects flash cards. A multiformat design allows you to stack up to eight different cards of varying sizes (CompactFlash, Memory Stick, MMC, SD, and plenty of others). The case has a silver brushed-aluminum shell and a hard rubberized lining for serious protection.