This cheapo wireless doorbell comes with some screw holes or some sticky pads for hanging it. I figured I could do something more interesting... After all, why not show off your 3D printing skillz?This box has a removable lid so it's possible to remove the doorbell (useful when not in use, as the cold zaps battery life). If you want to make it more permanent, then drilling in a small screw would be enough to hold the lid on and thus the doorbell safe.