do not buy books look on the net for rt 66 sites there are several that give you a listing of everything to see on the original route as well as on the modern route. We live in Tulsa, Ok. It took us 3 days to get to Amarillo, Tx, We stopped and saw every small town's old buildings, museums, where the movie the grapes of wrath was shot, old bridges, famous eatereis, etc. We saw things as a tunnel under a small town's street that was made to beat the traffic on route 66. There are always many things to see and do on any trip.
blue whale and the forgotten Noah's ark
shoe tree
Ike's chili house in tulsa - where it was said that ike would sell cheap chili and a family of 4 might share it as it came with free crackers.
the big texan steak house - actually good steaks
old signage
i would just say to slow down and look for all of the unusual along the way
i will get off my soap box --- there is a world out there....