Hello everyone,
in the meantime I have drawn a draft.
The design shows the bricked beginning of the gallery from 1871. I have drawn the masonry and added a photo of the original.
I would then engrave the masonry in MDF, or rather recycle 5 mm MDF packaging. Everything should of course fit completely in a cake box, but will still consist of a box open to the front. Of course, this illuminates the impression of a mine reinforce.
The button with the green ring is an even-handed button with the case that a small show is designed and is only for the small presentation. For this I am powered by a test purposes microcontroller of the battery powered by electricity. The few SMD LEDs will hardly consume power. I believe that the question is solved in any case by a power supply.
Was not that you?