DIY black light from your phone! Fun to mess with and looks like a actual black light. Enjoy(:
Step 1: Stuff You'll Need
You'll need a dark purple & blue sharpie, some clear tape & your phone.
Step 2: Tape
Put your first piece of tape over the flash and color blue sharpie over it.
Step 3: Tape 2
Do that one more time with the blue sharpie.
Step 4: Tape 3
Color this one purple.
Step 5: Flash Light
Turn on the flash light and test it out by shining it on things like high lighter. It should look like the image up above.