https://www.austinchronicle.com/daily/design/2008-12-09/712324/

Pedal Powered Christmas Tree

By Andy Campbell, December 9, 2008, 9:30am, Chronique

The contemporary artist Bob and Roberta Smith (one person, I know, it's confusing) has installed a bicycle powered Christmas tree in the rotunda of the Tate in London. The tree itself is made out of recycled materials, and each of the eight bicycles grounded at its base are connected, via generator, to a set of lights on the tree. In a season weighed down by energy, credit and consumption woes Bob and Roberta Smith's tree provides viewers with the opportunity to make their own Christmas cheer!

Who wants to pitch this to the Trail of Lights?