Past failed attempts at keeping geraniums alive over previous winters included hanging the roots upside down (a definite failure), wintering the pots in the outside garden shed (they all died within two weeks), and then last year, they spent the winter in the house near a west window (some lived, but did not thrive) and in the garage (they actually lived and and even put on new leaves!).
An inexpensive shelving unit was purchased and assembled by the husband so that more pots could benefit from the sunny east facing garage. He even cleaned up his work bench to allow room for the shelves. And he hardly grumbled; that was probably just as sweet of him as assembling the shelves.
The plants are close to an east window in the garage, and seem to be doing fairly well after about six weeks in their winter home. I've been watering them about every three weeks.
Some lovely geranium art pictures from Barbara's blog: