For those anxiously awaiting their mail to arrive, constantly peering through the blinds to see if the mailman has finally arrived, this gadget is worth checking out. It will let you know when the mailman opens the box by letting off a little chime indoors.
Just set the receiver inside and it will buzz 4 times when the mailbox is opened. The wireless box has a 300' range and includes a 12-volt battery and double stick tape for the transmitter.
If you're really interested in one, you might want to hurry since the site is almost sold out of them. It is currently being sold for $49.99 with an additional $12 for shipping.