Not that my husband has never gone away before but inevitably when he does I end up with another little furnace in the bed beside me. One of the boys (they seem to have some sort of unspoken schedule for this) waits until he knows his brothers are both asleep and then hightails it into my bed knowing full well that I won't kick him out because I can't be bothered to get up and remove him. So I put a pillow down the middle and appreciate the fact that having another body in the bed does allow me to sleep without socks on in the winter.
The poster on the left was one originally printed in the UK during WW II to be put up in the event that the Germans actually invaded. It pretty much sums up my goal at home which, like most goals, is great in theory but will probably never be achieved.