If you’ve always liked the idea of showering in a disco, you might like the idea of the LED Color Changing Shower Head from Chinavision. This specially designed custom shower head is just like a regular shower head, except that it has LEDs that light up according to the temperature of the water flowing. For temperatures below 90°F it turns green, for temperatures 91 to 105°F it turns blue and 107 to 113°F will make it turn red. Anything above 114°F will cause the shower head to flash, alerting you about the danger of potentially scalding yourself with water that’s too hot. To power the LEDs, it relies on an internal generator that’s powered by the flow of water coming from the hose. These fancy shower heads are available here for $13 each.