How unusual everything looks under ultraviolet light, you can take a cool selfie or just a photo. Under the ultraviolet flashlight, fingerprints and substances possessing the property of fluorescence are visible in the dark.
It is quite simple to make ultraviolet on your own, you need a transparent adhesive tape and markers of blue and violet color, as well as a light source, a flashlight or a smartphone flash. How to use it will tell the fantasy.