Using the clock mechanism Bambu sent with my printer, I made a wood accented designer clock that uses magnets and “stainless” steel balls from Amazon to tell the time. I wood turned the face of the clock, but I attached a 3D printable version as well.
gif of it working can be found on my website.

Magnets
Stainless Steel Balls (actual stainless steel isn't very magnetic, so I looked at reviews to see which ones were impure)