Those who like to shower in the dark--or prefer their showers tinged with a psychedelic, acid trip kind of feel--may find the LED shower light quite illuminating.
The gadget installs to standard shower pipes. Turn the shower on and a blue light tells you the water is cold. A red light means it has warmed to 89? F.
The attachment--which measures approximately 4 inches in diameter--is powered by an internal turbine and doesn't require batteries. It includes a flow regulator that limits maximum water flow to 2.5 gallons per minute at 80 psi.