Sonic Key Finder
Are you scatterbrained like me and constantly lose things? The Sound Activated Keyfinder (which consequently was my third grade science fair project) will sound off an alarm when you clap your hands or whistle (it actually works with any loud noise) and won’t stop until you find it. Now, obviously this won’t help if you were in the house and left your keys in the car and I can only think of the fun it would be when you go to a sports event of a movie. Available for £5.95 (Roughly $12 USD).
