Once you've spent a few hundred pounds on a printer, my wife is looking for new ideas to make gadgets for the home.
 

"Make a nice watch for the kitchen, pleaseee" she said.

Well, I did it. It is very simple, printed with a pause for changing the filament (I haven't Bambu yet).
The elements are glued to the wall non-invasively using double-sided tape.

Battery enough for one year (ishhh).