Create Your Own Blacklight
Attaching a piece of colored tape over your phone's flash transforms it into a mini UV blacklight. You'll need your smartphone, clear tape, and two markers: one blue and one purple. The process is straightforward: place a strip of tape over the flash, color it with the blue marker, and let it dry. Add another tape layer, color it blue again, and let it dry. Repeat with a third layer colored purple, then finish with a final clear tape on top. Use your phone to take a picture of your bathroom or toilet, and you'll be amazed at the results of your DIY blacklight!
