.. what would I need in order to use this spinner I found on fleabay?
Hard to tell with just the one picture. For sure you'd need optipac, or do a mouse hack, or an oscar optical board and an oscar mouse board.
A plastic safe lubrication, maybe. (I think the gears are plastic.)
A small hex or torx (star) wrench, maybe. And/or a roll pin remover, maybe.
Dude says all the parts are there, but makes me wonder why he didn't put one together and sell it as a working spinner for more $$$? [shrug]