Wall clock on the basis of a Ikea Jetström wall lamp. 

it's basically a watchface that is screwed or glued on to the diffusor of the wall lamp.

The numbers are recessed from behind so they're illuminated by the lamp. I've printed the numbers in a glow in the dark filament but plain white should work great. everything that should not shine trough has a black matrix added. 

the outer frame had to be splitt into 4 parts, which can be screwed together using m3 x min 15mm bolts. 

after assembling the frame, lay it over the diffusor and mark or predrill the mounting holes. (I added way to many mounting holes to the frame)

after marking or predrilling, widen the holes in the diffusor to 4mm and screw the frame on. 

alternativly, regular CA glue should work as well.

In the newest version there is a black frame around the numbers to provide readability in daylight.

I've used a fancy radio controlled watch movement, but any regular hobby movements should work.

just mark the centre of the diffusor, drill an appropriate sized hole for your movement and screw the watchface to the diffusor using the threads on the movement. if needed, glue it in place.

When buying the movement, it needs to fit at least a 6mm thic whatchface.