I love to mix different things to make my own potpourri and simmer it in my slow cooker or on the stove all day. There is nothing that smells more fresh and clean.
2 whole oranges, cut into pieces
4 sticks of cinnamon, broken into 3 pieces each
1 tablespoon whole cloves
water to cover
Add orange, cinnamon, and cloves to pot to simmer on top of the stove or in your slow cooker. Then add water until pot is almost full. Monitor water level frequently, adding more water as needed. Store in the refrigerator each night and it will last you for about a week.
You can add other things to the brew as well. Sometimes, I throw in a couple of slices of lemon. You could also add cranberries, nutmeg, pine needles, or whatever you like. Experiment with it and let me know what you try!