THE IDEA: Boil apples, oranges, cinnamon sticks, and vanilla in a large pot of water, then reduce to a simmer and leave the pot on the stove all day so that the steam can fill your house with lovely holiday smells.
RESULTS: So, I was really anticipating that the house would smell like Christmas on crack. It smelled wonderful around the pot and the steam really warmed up the kitchen, but the smell wasn't as strong as I wanted it to be. That being said, I might've just acclimated to the smell, because when my roommates came home they looked at me and asked, "OMG, what are you making?!" My guess is that the second your guests walk in the door, they'll feel like they just crossed the threshold into heaven. —ES