Coffee: Cafe Racer or 1000 Faces & they just put in a Caribou Coffee!
Restaurants: La Montana (Mexican), Momma's Boy (Southern Cuisine), Jim N Nicks (BBQ)
Sightseeing: Athens is home to the UGA Bulldogs, which means there are mini bulldog statues all over the town (makes a fun little hunt). There are also many parks and trails in the area.
Shopping: Broad Street is the main drag in Athens with lots of cute shops (and even more on the surrounding streets)
What isn't there to do in Atlanta? Just to rapid fire some ideas: World of Coca-Cola, Zoo & Aquarium, Truett's Luau (Chick-fil-A), Botanical Garden, Krog Street Market, Skyview Ferris Wheel, several museums, even the College Football Hall of Fame