Then there’s LEDs, which are useful for making cool pixel-based ... If you’re into LED filament clocks (and who isn’t?), check out this analog wall clock, or this spiderweb-like digital ...

This wall clock built by [Alf Müller] is lovely, using two NeoPixel rings to mark the time by casting light onto a 3D-printed ring. The blue shows the minutes, made more discrete by a grid inside ...