One way would be to add bees, bee-heat and/or respiration to cold temps inside a sealed box with no way for it to exit.
For the record, our winters in North Wisconsin can be very wet AND very cold, even at the same time (Finland its not, although our winter is just a bit shorter, meaning first killing frost to last). Have you never spent any time outside when its snowing? As gathered from much experience ;) without some sort of protection or even with some, most of us would be wet AND cold pretty fast, from the outside AND the inside. Try it sometime (I can't wait).
Are you trying to bait me Finski (or prove my point for me)? What is the 'real' point of your question? Are we going to learn something from all this? All right, now where did he go?
I was under the impression that you've been doing this awhile, am I mistaken ;)?
Honestly, I stopped calling people and their beliefs 'stupid' if I happened to disagree w/ them back in grade school, (Politicians being the ONLY exception) but I hope I'm never beyond calling someone out for doing so.