Linda, kilroyscarnival - you painted a picture that is very familiar to me and my family
The only thing that changed is that now I have more tomatoes and peppers - seeds and seedlings all other the place, and all the warm spots in the house are taken over by jars with kefir or yogurt culturing ...
Even with the furnace on, we can only get as far as 16C (60F?) (without getting bankrupt over winter), so any warm spot is accounted for

. My official seedlings room is much colder (low 50s) unless all the seedling lights are on.