Most public waterways require all boats to display navigation lights after dark. Get in some night paddling using this Thing.
When glued to a rigid base, this thing can hold a 2mm thick card vertically. The card can be fitted with the Life Gear light holders from maushammer. After printing and testing the first version (V1), I wished it had a support so it did not depend so much on the glue's adhesion. I've included version two (V2) to address this concern.
The card can be affixed to the holder by either using a short M3 screw, or by drilling a hole through the card and putting some stiff wire through the three holes.
I've used a piece of thick aluminum flashing for the base and a piece of aluminum wire to hold the base to the board. The red light goes on the port side, green light goes on the starboard side.
Feel free to make changes to the model by using this link.