An interesting advertising gimmick is often a contest to find the oldest still-running Maytag or Plymouth Voyager with the greatest mileage on it. It is often a great source for advertising memorabilia depending on the rules of the contest---some only want written entries with photograph, in others you have to submit with right of return, and sometimes submit with no return ever. Personally I really don't believe there is going to be great harm to museum collections from the Listerine bottle hunt, which I've not heard about until now. If I had a museum and had a bottle, I'd submit the entry on behalf of the museum....would get great publicity (use it in your own inhouse newsletter) and funds if you won. Dean DeBolt, Special Collections University of West Florida, Pensacola