I made this night light today. I had seen this picture on the internet and used it for some back lit acrylic. I had a little trouble with the base of the night light because the acrylic wasn’t thick enough to fit snuggly into the base. I used a strip of wood veneer and a strip of electrical tape on the opposite side of the acrylic. The base came from China, it was one of the menu holders that @smcgathyfay told us about last year.
The first picture was made without the electrical tape on the bottom, but the second picture had it installed.