Litophane Night Light.

Just 3 parts needed: light bulb socket, power cord with switch. LED bulb. I used E14 bulb socket.

Printable in PLA if you use max 3w LED light. I tested it with 8w LED and it's got pretty hot.

Use m3 screws and nuts. Holes for screws are tight, you can assemble everything with just screws. I used 20mm m3.

Litophane:
Width: 100mm
Height: 128mm
Frame thickness: 4mm
Frame depth: 3mm
I used: https://tool.itslitho.com/