If you've ever lost your keys, wallet, cellphone or dog around the house, you might consider trying the Stick-N-Find. The Stick-N-Find technology allows you to simply stick a sticker on an object, animal or person even, and find it using radar technology that is connected to a smartphone app.
Especially useful for pet collars, the Stick-N-Find alerts you when the sticker is out of range and alerts you again when it is once again back within the range of the radar screen. For animals that wander off, this can be a useful way to track them down by having an alert to when you are getting closer. The Stick-N-Find works on iPhones, iPads and Androids, and features a range of 100 feet with battery life lasting over a year.