This is a lithophane wall mount or stand that is designed to work with the lithophane creator from the fantastic site http://3dp.rocks/lithophane/

be sure to set the maximum size in the model settings to 200mm, thickness to 2mm and the type to "outer curve".

all parts print without support.

i would advice to print the led holder, so you can use 2 led strips for a more even illumination. the standard 12v led strips can be powered by a 9v battery without any modification, you just lose a bit of brightness.

i made a little tutorial where you can see the mount in the "battery mode": https://youtu.be/kTh8FbKOlb0