This is cool, as much as I would steer people away from the Stamp as a micro platform (I am including a link to one build on the Lynxmotion arm for a contrast), this application is moderately cool. It will recognize the color of an M&M candy and drop them into the correct hopper. How this could help you? Well, that would be up to you, but even if you don’t have an immediate app, building it would still be fun.
M&M Sorter
Lynxmotion M&M Sorter