If you are the type that always bring your home key around while paying in the water, this floating LED keychain would help you find your lost key easily if it ever happen.
Once the keychain splashed into water, the LED will start flashing continuously until you press the stop button. It may not works well in the sunny day, and it will works good in pool environment where the space is limited.
No need to panic when your keys accidentally fall into the surf, pool or lake. Not only does this attention-getting, yellow-and-orange neon keychain keep two keys afloat, but as soon as it hits the water a bright red LED automatically starts flashing! Durable ABS plastic with replaceable batteries tightly sealed inside. Bulb lasts 100,000 hours and never needs replacing. You can even use it on land as a mini flashlight to find a keyhole in the dark!
(Price: $4.90 at Solutions)