I have a brewbelt on the way. I'll need it for my next batch. The temp is getting pretty low around here now. The one and only (my first ever) batch doesn't need it since secondary is due to finish on monday. It stays warm next to the my dresser in the bedroom. Waking up to a nice wine smell in the morning is refreshing.
Pulled out a heating pad tonight, set on low, started a new kit and will use the brew belt on it. Heating pad is on a kit in secondary. Seems like either the yeast is coming back to life or CO2 is coming off.