Break out the markers, doodle on a backpack and enter to win $10,000 in prizes. Office Depot and Sharpie have partnered for “Project Backpack.” Now through Sept. 19, purchase an Office Depot canvas backpack or simply download and print an official contest template. Once you’re done drawing, upload a photo of the design or scan in your template to the Web site and submit the completed entry form. The winning design, judged by online voting, will be sold in stores next year.

This contest is open to anyone ages 5 and up.

Click here to get started.