This UV (ultra-violet) nightlight circuit has a touch sensitive 4-bit d/a dimmer with 16 brightness levels and a transformerless AC mains power supply. Power consumption is under 0.25W . It gives off a very spooky deep violet light. You will also see many objects in your room glowing faintly in the dark. Light diffuser is made of Endlighten Plexiglass, a transparent acrylic material which contains microscopic particles that reflect light in random directions.

I have included a PCBoard PDF for download.