The Monkey Hook® is a US Patent-Pending lightweight, super-strong spring steel product that enables anyone to hang a picture, mirror, or wall accessory of up to 50 lbs. securely and in just seconds, without the use of any tools.
This product is uniquely engineered to make hanging pictures, mirrors, or anything hangable' a simple, easy process anyone can do. Just find the spot where you want to hang the picture and the EZ' Self-Boring tip enables you to penetrate the drywall, using simple hand pressure and a back and forth twisting motion. Then, the shaft simply slides through and with a final push the Self-Locking Feature 
locks the Monkey Hook® securely in place, with only the hook exposed and ready for your ready-to-hang picture.
For more information, go to www.monkeyhook.com [1].
Links:
[1] http://www.monkeyhook.com