You can buy Frodo Lives car sticker thingys nowadays, look
here.
Have a look at that site, you'll be amazed at what you can actually collect.

Judging by some of the outlandish and possibly noxious things you actually can buy, e.g. empty popcorn buckets and pop cans with characters from the films on them, you could start up a whole new line of Barrow-Downs collectibles. You could have the empty can of Irn-Bru from which Fordim supped while concocting the Infamous C-Thread, or the scrapings of burned tobacco from the bottom of davem's pipe, smoked during his recent writings on 'dumbing it down'. And from the same thread you could collect the empty sandwich packets which SpM went through while composing his posts. You could even collect the corks from Mithalwen's wine bottles, all gathered while she was creating another RPG post, or empty cans of lager from Eomer of the Rohirrim's sessions on the mirth forum. I'd be quite happy to hand over the cigarette ends I gathered while musing on Light and custard. For a price of course.