This post made it here because of my aching back, but what a cool hot tub. The Soak Wood-Fired Hot Tub ($3900) is pretty much summed up in its name, it is a hot tub that is heated by burning wood. The main body is made from welded marine grade aluminum. The interior is lined with red cedar seating and a side accessed stove. The chimney is covered in stainless steel. Perfect for that remote cabin or anywhere you don’t want to run electrical or gas lines.