What to do when you are not camping for awhile

Ok. So as I edge closer to getting a motor home and I live in Michigan, what do you do with your rig in the winter or when you are not using it for awhile. Do you start it up occasionally? Take it out for a little ride to get all the fluids moving. Take out the house battery(s) and put them on a trickle charger?, things like this. Suggestions welcome. I am looking at a gasser, not a DP.