LED Bath Temperature Floaty 10x More Useful and Beautiful Than Rubber Ducky

This watertight, multicolour LED housing sits in a bath and changes hues according to water temperature. Simple and a lot more effective than a simple faucet mounted sensor that will not compensate for cooling off periods. But not as simple as dipping your toe into the water. If this were it, I’d probably recommend that this concept never see the light of day, but it also can be switched into a candle mode. [Yanko]