I'm usually not much for camping in the winter, but this thing might make things a little more pleasurable. It's a hot tub and a hammock all in one.  It runs on propane and can be hooked up to a standard spigot, or you can use water from a natural water source.

This Hydro Hammock started on Kickstarter last year and is now in production and available for sale.  Prices currently range from about $360 to $1600.  I have zero experience with this product and am not affiliated with them in anyway, so do your homework, but the reviews I've seen have been great.

If there is anyone out there who owns one of these, I'd love to hear some feedback on where you've used it.  If you tell me they're worth the money, I might actually get one...otherwise, I'll stick to Chico.