Cold
I have a small ceramic heater I can put in the cabinet to keep the tools warm -- I just put it on low and it keeps everything nice and toasty warm all night -- also makes a great hand warmer if I have to go out there to find something.
If you don't have room for a heater, or want something that doesn't use that much power you can mount a low wattage hallagon bulb in your cabinet. I have used a 20 or 25 watt light in the past and it also worked great.
Happy carving to all!
(singing off key) ... a carving we will go, a carving we will go ....