There's always that one room in your house that's hotter than the others during the summer. Instead of cranking up the AC (and your bills) or closing all the blinds and living in darkness like a bat in a cave, try this inexpensive homemade solution. It's perfect for small rooms like dorms, dens, offices, bedrooms, or even your garage and a temporary solution for an AC wall unit on the fritz. All you need to put together your very own air conditioner is a 5-gallon bucket with a lid, styrofoam liner, pvc pipes, small fan, and frozen bottles of water or ice packs. You can…