See: http://talk.maemo.org/showthread.php?t=86332 // Edit After finishing my N900's alternate body project, I'm planning to do something special. You see, I'm probably going to settle down on circle-cover for camera in replacement backcovers. there is no reason, why I couldn't use modified camera module (without IR filter) whole time, with one part of circle cover being just IR filter (for normal photography). This way, camera cover would have 3 states - closed, open, and open-with-IR-filter Add to this a pack fo high-power IR leds, and you have portable night-vision. Either by looking at N900 screen while keeping it in hand, or - if one want really fancy DIY kit - by hacking together a googles with mount-point for N900, and screen for view (using video output).