We recently went on vacation. One of our stops for gas and food was in Le Claire, Ia. This is where the tv show American Pickers. It is located right behind a gas station/ A&W. If you have never been to an A &W they have decent burgers and frosty mugs for root beers. The Antique store isn't too big but it is packed with items. We just looked outside since we are traveling with our dog.
For road trips I recommend looking online at www.roadsideamerica.com/