>>> Off-grid Houseboating
Panbo has a link to this nifty looking "houseboat". Really more of a barge made to look boatlike, it’s a rentable, on-the-water cabin.
Robinhood Marine Center in Maine has the Island 40 Tessie Ann set up for you to find a secluded cove and camp a few days. Rents with a 15′ runabout to explore with.