Just a brainstorm i had today....as long as our generous host will allow, could always organise some 'auto-games'. More accuracy & skill as opposed to speed, so wont make a mess.
Example: The usual drive through tight cones/canes/whatever
Reverse through said cones.
See how far you can drive with a football on your bonnet-no bonnet mounted spare wheels
allowed.
Simplified TYRO.....blindfolded!!! Need a trustworthy navigator for that one!!
Best of 3 runs and if folk donated a small 'prize', like a bar dairy milk/tartan keyring...whatever, adds to the fun.
Im sure with a bit of imagination some more could be thought off. We used to do this sort of stuff on fun days with the Triumph club, and its really good fun
Anyway, just an idea. Bomb it out if you wish!!!