Hope you are able to shovel out soon and get back on the road! Here is my contribution to the thread....more as I wake up a bit and remember other places and resources.
A guide to unique, offbeat, quirky attractions around the country: http://www.roadsideamerica.com/
Another guide to the unusual things we never knew were out there: http://www.atlasobscura.com/
RV Blogs are great resources for where to go and what to do/see. Here is one of my favorites (these folks are pretty tech-savvy and full timers): http://www.technomadia.com/
Travelers reviews of thousands of cities, towns, areas of interest and what they offer: http://www.virtualtourist.com
Good resource for scenic roads with maps and descriptions: https://scenicbyways.info/
Great resource for the State of Oregon including weather, traffic, events, and such: http://www.tripcheck.org/
Short drive-through video clips of campgrounds and RV parks (they continuously add more, but definitely don't have most yet): http://www.campgroundviews.com/
As for some specific pin-it locations we've enjoyed:
Oregon: Bend - Overall great town. Awesome 'beer trail' of microbreweries. Great restaurants and shopping, amazing natural beauty and sights (drives, trails, museums), interesting micro-distillery (Cascade Alchemy)
Vermont: The whole Woodstock/Quechee area - Quintessential New England with many things to see and do.
South Carolina: Isle of Palms - Beautiful beaches, great bars, restaurants, live music, close to Charleston.
California: Napa Valley/San Francisco - Stay at Napa Expo RV Park (higher end) or Skyline Wilderness Park (rustic, but has hookups) and explore Napa Valley, Sonoma Valley and Calistoga. Short drive to Vallejo to catch the 1-hr scenic ferry ride to Fisherman's Wharf area in San Francisco (great public transit from there)