My current office clock is a mirror image clock. Partly because it's on the wall behind me and I can read it better reflected in my window, and partly because it throws people off. People are used to it now though, so I need to find some other form of equally confusing time piece.
I have a RTC Pmod that could be the start of some sort of clock. I need to make something that doesn't require a lot of mechanical or woodworking skill though.
Maybe just a simple binary clock would do the trick. Or, maybe something with Neopixels.
Is that your "secret ingredient" to go up top center? It's the very first thing I thought of. I actually used one in a circuit back in the '50s; possibly entombed in my basement still! If I'm right, sorry to spoil the surprise; if not, think about adding one! Think 6E5.