Our friends over at GOOD have created a “doodle project” asking you to take a break from using any form of motorized transportation for a whole day, hop on your bike, and illustrate in some form or fashion your carbon-free experience on two wheels. The contest ends Sunday, September 12—that’s this weekend, so get on it! The best overall doodle artist wins a GOOD T-shirt and a free subscription to GOOD, the quarterly magazine “for people who give a damn.” Further details about the contest can be found here.

Enjoy the beautiful weekend with your bicycle and sketch pad!