I use a small 25 pint dehumidifier.
http://www.newair.com/products/AD-250/Only issue is it has no humidity setting, it's just on or off. Also creates a fair amount of heat, couldn't notice in the hybrid but I can in the FW. Obviously you need to have power.
Never had luck leaving a vent or window cracked, guess I needed to open them more then I was willing to when it was cold out. I have used the air conditioner in the fall to dry things out, but it gets too cold. Have heard you can run the heat and the air conditioner concurrently, but I never tried it.
The dehumidifier works the best for us, but it is one more thing to haul around.