A dehumidifier is a good idea. Maybe I'll save money by not having to turn the thermostat so high. But in other houses, buildings?
two words: smartwool socks. Seriously, I got a pair as a gift (a gag gift, actually, as I am always complaining about my feet being FREEZING), and they are amazing. So far, toasty warm but no sweaty gross feet. I love them.
I might look into a dehumidifier as well, partially because our bathroom and spare bedroom don't have the greatest ventilation, but it'd be great if it could help with my freezing toes. As long as I'm exercising or moving around, I'm fine, but if I sit at a desk or in the flat, I'm cold in no time.