If you like surfing, but are so inclined to surf in places that are a little colder (say, Canada), you’ve probably considered the problem of warming up after getting out of the waves. Well, consider no more, here’s the solution: Surf Sauna ($18,000). It’s a big, barrel-shaped sauna on a trailer, so you can drag it to your beach and have it heated and ready for when you’re done tempting the polar bears. It holds two to eight people, hitches to your vehicle, and you don’t even have to surf to enjoy it. Oh, and if you don’t have eighteen grand to drop on a mobile sauna, you can always rent one.