This box holds a fairly good sized curved lithophane. It does require a very specific size, so be sure to read the readme file and adjust accordingly or it won't fit. There are a few versions. Specifically the ones marked version 99 are modified to be thicker and more sturdy with the obvious downside of using more filament and taking a bit longer to print. The is a version with a solid lid and one with a slot to allow easy changing of your lithos. All files have been optimized for printing with a .8mm nozzle for faster printing. Of course any size will work though.
The socket and bulb are candelabra sized E12 (links below for my specific ones). The socket is a very tight fit and is inserted through the bottom and then glued into place after you get it inside the box. The cord link is mostly for reference. You can find these anywhere. I really like the Patriot Lighting ones from Menards and they are cheaper. Anything similar should work. You will just need to cut off the metal retainer parts so it will fit.