So you are worried about losing your valuable items? You should give the iTraq a look. This is a smart locator that relies on cell towers to report its location. It is almost the same size as a credit card and lets you tag and locate your valuable things. It has a much better range than Bluetooth device locators. iTraq uses Cell-ID technology and lets you adjust how often iTraq should report its location, so the battery lasts up to 3 years.
The iTraq may not be as accurate as an expensive GPS solution, but it is good enough to let you know where you have left your valuable items. The companion app lets you manage all your iTraqs conveniently. Geofencing is also available. You can find this project on Indiegogo.