OK Chrry ... how about upping the anti with Lucid's support? Whoever the registered owner that collects the most "items" in a year wins something (maybe a factory tour)? The item being left on the car has to show the userID of someone here in the forums registered in the "game". Only 1 item per userID counts and only people registered are eligible to win. This would show that the winning owner has his/her car at many different places which would be great for brand recognition.
And as for the folks worried about getting your paint messed up ... I get it ... I'm just as paranoid (hence the full body PPF). I was thinking more like those rubbery dots used for mailers and sticking the item to the windshield or drivers window. No damage, no residue and nothing left behind when the item is removed. Would this be acceptable if there is a potential prize on the line?