I know I'm reviving an old thread, but I just wanted to mention that I now live about 5 miles from the Route 66 route in the San Gabriel Valley (east of Los Angeles), near the city of Glendora, CA. Glendora decided to really try to revive the Route 66 lore, and changed the name back to Route 66 from Alosta Ave. They even have a little website. Here's the page with a few pics:http://www.route66glendora.com/gallery.html
More of the merchants celebrate Route 66 than just those on that website, and you see references to it by a number of stores on that street in that area. A number of them (even including the Albertson's grocery store) have little souvenir areas. Please let me know if there is anything contemporary that would be a suitable ancillary item for your collection. Feel free to contact me directly if you'd like.