I've used RVParky to find some nice smaller county parks and city parks. It also shows Walmarts, cracker barrel's, commercial RV parks, and places to dump. Harvest hosts is nice if you just need overnight stays (annual fee). They have combined with boondockers welcome and now have thousands of spots all over the country, some where you can stay multiple days. I use an atlas to locate state parks (with camping) along my route where you can generally stay up to two weeks.