Wasn't there a scooter thrown from one tier down onto a lower one at an Italian match once?
I remember when there was a constant rain of coins thrown between the bottom roght of the Holte at the b-losers in the old Witton Lane stand one game. I could see my mate crawling round picking them all up. He now has a couple of sports shops.
For littlevillain's benefit: Mark Convey.
There was a scooter thrown by the Inter fans when they played AC Milan and here's the video of it:-
I remember holding my breath when that happened and then to my relief realised it was only a Vespa. I guess it had to be as we have all the Lambretta's over here in England.