Do you have a habit of forgetting keys? Do you have an iPhone? If your answer for previous two questions is Yes, then you must buy Hone.Hone is a device which can be attached to a keychain and it will help us to find our misplaced keys. Its app will work with some iOS devices and it has the capacity to flash or beep up to 100 feet away.
If you do not want to lose your again, make Hone as your keychain partner.
[Source: Hone]
Products:
Amazon: Cobra Tag Universal for Android and iPhone/iPad (Cobra)