I think one of my favorite winter tips or hacks is I have an old pot that in winter I keep it on the stove full of water and the flame on low through all the hours we are awake. The moisture in the air allows me to keep the thermostat lower because moister air feels warmer. Sometimes I throw a cinnamon stick and some whole cloves in it and it makes the whole house smell good. If we are coming down with or have colds I will add a few drops of eucalyptus essential oil which helps the nasal passages and the coughing. Here are a whole bunch more winter hacks from a round-up by The weather.
