Itching to reuse last Halloween's flapper and gangster costumes? PARTY FOR THE PARKS ON PONCE, on Sun., JAN. 28, has a roaring-'20s theme and features vintage 1920s automobiles, music from the Will Scruggs Jazz Fellowship, a movie in Fernbank's IMAX theater, and live and silent auctions. It's all fun for a good cause, benefitting the Olmstead Linear Park Alliance, an organization dedicated to restoring the historic greenspace along Ponce de Leon Avenue. $75. 6:30 p.m. Fernbank Museum of Natural History, 767 Clifton Road. 404-853-7159. www.partyfortheparksonponce.org.