Sparkfun electronics has a pretty good Maker-style challenge – “This is a 640×480 pixel resolution CMOS camera used in the Samsung E700 cellular phone. While 0.3 mega pixels may not sound like a lot, this module is one of the smallest, lowest cost CMOS imaging modules currently available to the embedded market…We would like to announce a $200 prize to the first user capable of capturing an image on the new CMOS digital camera. This 640×480 camera is extremely small, low cost ($19.95), and based on proven cellular technology. Unfortunately we don’t have much technical info to go with it. Up for a challenge?” Link.