I don't know about you but this time of the year, especially when the heating is not on too much, I find my airing cupboard not as hot as I need it to be, for proving bread.
I had read on-line somewhere about using a mini electric blanket, the small variety that sits behind your back, although I was a tad worried about it getting wet. DB came up with a much better idea, using the base of an electric propogater!
Once the bread was nearly ready to prove, I brought it into the kitchen and switched it on. Unfortunately, it doesn't have a lid, so once the bread was on, it was covered with cling film, then a tea towel to help retain its heat. It worked a treat:
The loaf on the left was another gluten free loaf, came out like a brick, even the birds wouldn't eat it!