I have 3 Nikon F100, one Mamiya RB-SD, and a couple of digital.

I don't do anything special. I keep them in my closet. My house is always air conditioned. I'm a bit more concerned about lenses than bodies. I still don't do anything special.

After use, bodies and lenses get a quick burst of compressed air, then wipe down with a soft cloths. then they go back into my closet.

If I don't plan to use it for quite a while, I usually take batteries out and put it into a ziploc bag with a descant That's if I plan to not use it for 6 months or longer.