Mbot bumper set

This set was designed by my 9 year old son to help protect his mBot from incidental bumps. He is learning to code and to CAD with mBot. He occasionally crashes the mBot into baseboards, etc. We thought it might be fun to give mBot bumpers to help protect the forward facing sensors from unwanted contact. Since the spacing for the fastener holes was the same front and back, he decided to make a bumper set with different "license plates." As a bonus, the bumpers work pretty well as a carrying handle.