"Break a glow stick and put in clear nail polish." DO NOT DO THIS HOLY CRAP! There are some toxic chemicals in glow sticks that have not been tested on nails. They make glow in the dark polish that is safe, just buy some.
Ombre nails with an eyeshadow brush. Paint your nails with your base color, then apply the eye shadow and finish with a thick clear top coat to lock everything in! The eyeshadow and eyeshadow brush is such a cool technique to use!