God is witness as to the number of times I thought I have lost my keys only to find them in the unlikeliest of places. Having recently seen a movie based on black magic, I would have definitely believed it to be the work of evil spirits who were intent on gulping down my keys were it not for the wireless key finder. Its definitely a god send.

The range of this finder is a 60 feet radius. Simply press one of the color-coded pager buttons on the compact wireless transmitter, and the matching key fob will answer with a loud, clear alarm from anywhere in your home.

Available for 50$ USD from Brookstone. The only down side is that there are only 2 buttons and key fobs. Do something with allowing multiple keys (a LOT more) and keep the price in around the same range and you have a winner.

Source