Basic paper punches do two very extraordinary things for crafters: 1. They minimize your workload and save your fingers from completely drying out and falling off from weilding scissors at oblique angles the whole day, and 2. They create perfectly cut, perfectly uniform shapes and can be used over and over again.
Watch this video to learn how, with a few punches, you can create the basic shapes for making a hammer, wrench, and screwdriver. These tools can be tossed into a paper toolbox on a paper card for a nice Father's Day greeting.