I've been working away from home recently and had a lot of trouble with my planes getting a thin coating of rust on the base. I don't like to coat them in oil/whatever as I don't have a lot of time these days for woodworking, let alone cleaning off the oil before I can start.
The solution I hit on was to use the sleeves from some old cotton shirts. Slip the planes inside and they seem to keep the rust at bay. (Okay, I admit it, I nicked the idea from L-N :wink.
I have a small tool cabinet next to my bed, and at night I bring my most prized hand tools in to keep them warm and toasty. :shock:
No, just joking, Honest!
A nice coat of paste wax for infrequently used tools and a wipe over with camelia oil for the rest at the end of every session works for me. That low angle L-N block plane still rusts like a pipper though!