Since the sensitivity of airport workers and luggage can't be guaranteed, you'll need a good case. The Naki-branded cases pictured above are the best and go for $30.
Wireless Network Gaming
For those of you with Xbox live or PS2 online-enabled games, there's one item to make you all happy...
The DWL-810. If you've got a wireless network setup, just plug this into the back of your console. It creates an access point, and you're off - no 50' Ethernet cables.
Ok, now we've got you set up with essentials, and it's customization time.