3. LED Heat-Sensitive Shower Light
With the LED Heat-Sensitive Shower Light ($30.84) you'll never jump in a cold shower again. Turn the water on and a flood of blue light shines down through the shower stream. Cool, blue and refreshing. When the water gets hot at 89 degrees F. the color changes to red, alerting you that the water is getting hot. Not only useful, it's also pretty cool!