Ah, how about this: the main camera, pico projector, IR transceiver etc would be on a motorized, pan, til and roll, swivel thing at the corner, the motorization done in such a way that if a kid holds the device by the little horn and wip it back and forth nothing bad happens, it should be capable of aiming both out from the back of the device (the direction of the main camera in the N900), up ( the direction the IR port is facing on the N900), to the left (the up for portrait mode), to the front (the way the "webcam" is facing, to do this without wasting screen space, it would swing out instead of turning in place), to the right (same way as to the left, but turning about 180 degrees on the pitch axis), down (same was as to the front, but with pitch 90 degrees down). In the default position (like the main camera) and pointing up, it would be completly embeded inside the outline of the device, only swinging out when the view would obstructed by the rest of the device. Being motorized, it could cooperate with image stabilization reacting to the accell, magnetormer and gyrometer etc. Having the pico projector and the camera together would allow "touch" enabled, projection screens; with the IR transceiver, the emitter could be used for night vision, and the camera could be used to track the source of IR the device is talking with and adjust the aim for optimal communication. Perhaps to keep the lens safe, the module would stay with the lens facing inwards, and readinging the forces applied to it (like by a finger pushing it to rotate around the pitch axis, or pushing it in a bit) it would do a little twitch to tell the user to move away the finger and then rotate around exposing the camera, also programs would be able to tell it to power up and expose, and close back and power down, making it automatic. The motion would be done by servos (motors with sensors to identify the position they are currently in), so software always knows the exact position without the need of going all the way to an end and then moving back for an estimated amount of time. Being motorized would also allow for it to follow the user's face (for video conferencing for example). Also actually having a "head" capable of looking around and emitting light, that can even feel when you rub on it, would make it great for having an AI that can be more easilly anthropomorphized by people.

Obviouslly the system would be designed so all the motion won't wear out the contacts, wires ettc, preventing noise from happening from the parts moving.