iRewind

Any YouTube link

Paste one in, or drop it straight onto the aluminium. Whatever its owner allows to be embedded, plays.
Always in sight

Pin it and it floats above every other window, so whatever is playing stays where you can see it.
Two colourways, five sizes

Silver or black, from 80% to 150%, including 1:1, which is 61.8 mm across, the width of the real thing.

Free. Apple silicon, macOS 13 or later.

Any YouTube link