How about a TEA laser? Don’t have a high-voltage power supply to run it? Do what [Steven] of rimstar.org did, and power it with a homemade Wimshurst machine. TEA lasers give off ultraviolet light.

Tea has been sipped for generations across the globe. While some rely on it for their dose of energy, some prefer its soothing properties at the end of the day. A warm tea can be a relaxing ritual to ...