OLPC XO-1 Clip-on sports viewfinder made of LEGO bricks
The OLPC XO-1 still / video camera only faces in the same direction as the screen. When the camera and screen are turned to face the camera subject, you can press the "O" game button to take a picture. Because it's hard to frame up the shot without a viewfinder, I made one out of seven standard LEGO bricks that slips into the USB port.
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