I watched a guy make a spinner on the streambank by just pulling a piece of wire out of his pocket and bending and wrapping it with a pair of pliars until it was a bail that he could thread onto the line and follow with a couple of beads and a hook. THen he could put his choice of blade on the bail, and change the blade any time he liked. It was slick, took 3 or 4 minutes...... and most importantly it caught fish. And well, yeah, it looked cool too.

Does anybody know how to do that?

If you do, I'd be endebted if you could pass it on.