Adding this blob makes the cabin ten degrees warmer in the morning - the cob hat

It never fails to amaze me what thermal mass in the right place will do for people's comfort level. Yet despite that, so few modern buildings and heating systems seem to pay any heed to that.

The cob hat is simple but effective - well done!

I don't know about this cob hat thing, it looks like someone just stole the cob mullet idea from Uncle Mud...