The subject line of course from the great series of books by the late Douglas Adams. It was Marvin the Paranoid Android lamenting his ability to see in infrared.
A few years back a friend had given me a Hasbro/Tiger VCamNow. He was getting them on ebay for about $20 each. The camera is a 1.23MP still, and video at 640×480. I know that all cameras have an infrared filter built into them as the Charge Couple Devices (CCD) can see just fine in the infrared and even UV ranges.
It was fairly simple to modify. Just open it up, unscrew the lens assembly from the CCD and scrap the infrared coating off. I haven’t snapped the SD card into it yet, I’ve just been using the internal memory of the device. It definitely sees in infrared now.