I thought I posted this earlier..huh..
Tung oil or danish oil...saturate, wipe off (several coats till sits on top).
buff lighlty with #0000 steel wool. Finish with paste wax.
So easy to touch up vs. plastic polyurethane...Every time you get a ding or dent with plastic it's much more difficult to repair. With oil, just give it a touch up coat of wax now and then..simple and durable.