
Just in time, it's the Smithsonian Museum Day - free admission to hundreds of museums around the country for you and a guest! Here's a list for Georgia. The best values I can see are for the High Museum of Art in Atlanta and the Tellus Science Museum in Cartersville, which are usually quite expensive. The Center for Puppetry Arts and Booth Western Art Museum are two other good choices.
Download the free admission card here. Only one per household, unfortunately, but at least two people can go for free - and you can get out of the house.