Stick-N-Find

Need to keep track of something? Check out these Stick-N-Find stickers. The stickers are only 0.16 inches (4.1mm) thick and can be stuck to just about any item. A downloadable app acts as a radar, displaying all your devices within range. The app is available for iOS devices with Bluetooth 4.0 (iPhone 4s, iPhone 5, new iPad, New Touch, mini iPad). It also works on Android devices supporting Bluetooth Low Energy, running Android 4.1 and newer.

Cost: Starts at $29.99