Thought I'd share my brumation plans (you didn't intend this thread to just cover your brumation did you Greg?).

The only place I've got that will get cold enough consistently is going to be the garage. So I'm going to have the problem of ensuring that temps don't drop too low through the winter as the garage is detached and pretty much follows the outside temps.
Last winter we had our washing machine in an outhouse and I used a tubular heater on a thermostat to keep the temps up around 5C, according the the max/min thermometer I had sat on top of the washing machine it did a good job. However, heating a privy-sized outhouse is not the same as heating a double garage, so I'll be assembling a "brumation chamber" in the garage. I've got several sheets of Celotex insulation boards which I'll put together as a box, the tubular heater will go along the back wall with it's thermostat at the level of the lowest brumation box.
I've also got a weather station with an external temp/humidity sensor and max/min alarms, so that will be used to monitor the temp in the brumation box and give me reassurance that the heater is working. I'm also toying with putting my webcam in there as well purely so that I can check temperature on the thermostat and weather station sensor remotely.
I'll be getting all this setup over the weekend. We've got lows of 3C and highs of 8C forecast, so I'll monitor the max/min for the first couple of nights before introducing the first snakes.

The snakes that will be out in the garage will the the ones that need a longer, colder brumation - parietalis, marcianus, cyrtopsis, radix. The Cuitzeos will stay in the their vivs with the heat turned off, as will the infernalis and tetrataenia - daytime temps will max at 21C and night will drop to mid-teens celsius. My two babies (radix and infernalis) won't be brumating.