Building key racks is not that complicated. In fact, anybody can do it if they have the right set of tools and enough time. The basic elements of a rack are the hooks and the board that holds the hooks. So, you can make a crude version of a rack within a few minutes. But if you want it to look good on the wall, be ready to spend a little more time designing the rack. Use polyurethane paint on the wood as they dry really fast. After that, make the spots on the board where you need to fix the hooks. Make sure that all the hooks align perfectly with each other. Then drill holes on the board with a small drill and screw in the hooks.