Garmin Tracker

Have a pet, kid, luggage, vehicle, or scandalous wife you need to keep track of? Grab yourself a Garmin Tracker ($200). This tiny GPS locator is both lightweight and waterproof, attaching easily to a backpack, pet collar, or rear seat headrest. With it you get one year of standard tracking, which lets you see its location via computer or via app, the latter of which also allows you to draw a geofence, complete with email or SMS notifications when the Tracker leaves your designated area — kinda like a shock collar fence, but without the inhumane treatment.