http://cgi.ebay.com/75-000-196-5-cent-Jefferson-nickle-/190478068242#ht_500wt_1156 Just dip it, it will be like new.
Heck, I could take it down cheaper than that -- a penny would probably do almost the same job. A few ounces of scrap steel would do even better. Metal slug: < $0.05 Access to the intake of a warplane with engines running: priceless
This is no joke. Something as small and light as a cigarette butt can damage a turbine. When I was in the AF smoking was prohibited within 500 feet of the flight line. Also matches and disposable lighters were not allowed because people dropped them, Zippo only.
Spent many a morning walking the flightline in Misawa Japan looking for anything visable to the naked eye. Once saw an F-14 suck up a seagull on takeoff pretty impressive.
I don't know why the image of that made me laugh. Maybe because there are so many sky rats where I live.