Good for cleaning, not so good for warming them up.

What about a random draw? First Q session, you pull in to grid, and you pull a grid spot out of a hat? Grid has a hat with all the grid numbers written on poker chips in it, not too tough,,, and at every LRP race I've been to, there have been PLENTY of grid people, so staffing shouldn't be too tough. I bet they'd have fun with it.
I think that is a fantastic idea!!! I sure bet workers would have fun with it too.