For cold crashing you could try submerging the fermentor into some cold water and letting it sit for a while. Fill up a plastic storage bin or something to that effect (maybe a big plastic trash can, etc..) and set the fermentor in it. I would say put enough water in so that when you put you fermentor in the water, the water level is about halfway up the sides of the fermentor. This was suggested earlier to me for controlling fermentation temps, its called a "
Swamp Cooler". You might even throw some ice in the water depending on how cold you want it to get.
I'm a certified n00b, but i thought i'd put my 2 cents in.
