Can Crusher is a 'power test' that can be used by festival guests. To test their strength, they must have an empty can. The can is put into Can Crusher, and the festival guests hit with the hammer, after which the can is sent to the upwards and is crumpled together. Festival guests get a score according to how hard they hit and then they can try to beat their own score or compete with each other.
The purpose is to motivate festival guests to contribute to the cleanup. For several years, students have observed that cans with refund are quickly collected while cans without refund are longer and only collected by volunteers on duty. The power test can hopefully give a little value to armor cans and increase the incentive to collect them. With Can Crusher, students get festival guests to participate in the cleanup by gamification.
