Snowbank is an excellent off-the-grid semi-developed and hosted FS campground.  Spacious and private sites better for small RVs, trailers, and all tents.  Clean vault toilets, bear-proof storage boxes, and plenty of community water spigots.  Decent picnic tables and fire rings at each site.  No hookups to my knowledge.  The campground is on recreation.gov and sites are reservable.  Access to a great trail and FS road from campground, other hiking nearby.  Also, a 20 minute drive to Chico Hot Springs Resort and Day Spa (food, bar, soaking).  Expect to see wildlife, and this is grizzly country so proper food storage and best practices are required by law.  No cell service.  Excellent spot before or after visiting Yellowstone.