Game day is demanding. There is food to eat and teams to cheer on, so it's important to hydrate, and there is no better mate for football than beer — plenty of it, and chilled well, of course. Don't even bother loading up the fridge with beer, because once the game gets heated, it'll be hard to move your eyes away from the screen (and you'll need to keep the fridge free for food). An ice-filled cooler just behind the sofas will work perfectly.
For those who don't drink, be sure to have an assortment of sodas, as well.