In the market for a hot tub, but want something a little rustic? They check out the Dutchtub Wood ($8,400), which is, appropriately enough, a wood-fired hot tub. You chop some wood, throw it into the coils, light a fire, and then jump in. Cold water at the bottom of the tub goes into the spiral, which loops around the fire and then ejects warm water into the top of your hot tub. No moving parts, so that presumably means fewer visits from the repairman. Oh, and we hear that chopping wood is like foreplay. So you’ve got that going too.