Clay Games IV: Potters from near and far gather to compete individually and as teams in a decathlon of clay events to determine who will be the "Clay Champion of the World!" Come by to cheer on your favorite potter. Noon. Craftsman House, 2955 Central Ave., St. Petersburg. Free. Call (727) 323-2787 to enter.
E&E Stakeout Grill 25th Anniversary: The restaurant turns back the clock and rolls back menu prices to 1985 as it celebrates 25 years starting out as Eugen's and opening just before Hurricane Elena's visit to the bay area (a temporary obstacle to the restaurant's opening). 4 p.m. E&E Stakeout Grill, 100 Indian Rocks Road N, Belleair Bluffs. Menu prices vary. Call (727) 585-6399.
NecronomiCon: Award-winning writer David Gerrold joins other best-selling science fiction, fantasy and horror authors at the Stone Hill Science Fiction Association's 29th annual event. Featured events include the evening masquerade, trivia contests, live-action and tabletop role-playing games, science fiction and fantasy folk music, and "Dr. Horrible's Sing-Along Blog," shown alongside a live cast. Guests will join discussion panels about a host of science fiction, fantasy and horror topics. 9 a.m. Hilton St. Petersburg Bayfront, 333 First St. S, St. Petersburg. $20. Call (813) 982-9616 or visit stonehill.org.
WOBtoberfest: World of Beer 4th Street doesn't have an outdoor area for partying. So it's putting up a tent and throwing a huge Oktoberfest party, including a beer truck; live music by Reno and Nate Duo, Chuck and Nimble and Black and Blue; grilled food; German beer boots for sale; and all the employees dressed in traditional German attire. Noon. World of Beer, 5226 Fourth St. N, St. Petersburg. Free; food and drinks at an additional cost. Call (727) 525-4589.
USA Dance: Monthly dance includes workshops, exhibitions by professionals and amateurs, dance hosts, and snacks. 7 p.m. Gulfport Casino, 5500 Shore Blvd. S. $7. Call (727) 345-5884.
French cuisine: Expand your international cuisine repertoire in a class that makes classic French dishes. Make cheese souffle and poulet au pot, a favorite of Henry IV. 6:30 p.m. Cafe Largo, 12551 Indian Rocks Road, No. 18, Largo. $37.50. Call (727) 596-6282.
Pumpkin Patch of Fall Fun: This pumpkin patch has fall-related fun, games and activities, and winds down with a daytime family fest. Features hay rides and build-a-bag activities. 6:30 p.m. Fifth Avenue Baptist Church, 4901 Fifth Ave. N, St. Petersburg. Free. Call (727) 327-3353.
Work out while kids play: Parents can choose from Just Pump or Zumba while children have fun at one of Highland's youth classes, including Crazy Crafts, Bayside Gymnastics, Super Star Sports or Tennis. 5:45 p.m. Highland Recreation Complex and Family Aquatic Center, 400 Highland Ave. NE, Largo. Price varies. Call (727) 518-3016.
Gulfport Tuesday Fresh Market: Live music, vegetables and fruit, baked goods, herbs, teas, plants, and crafts will tempt the taste buds and your ears. 9 a.m. Beach Boulevard. Call (727) 366-4086.
Lady Veterans Night Out: An event to welcome home and help women returning from service includes information on resources available to female veterans and on benefits they are entitled to, but don't know about. Also includes free pampering sessions with massages and makeovers. 5 p.m. Christ the King Lutheran Church, 11220 Oakhurst Road, Largo. Free. Call (727) 398-6661 to RSVP.
Naturalist Night Out: A series of discussions with changing topics based on nature and naturalist thinking. Grab a drum for this portion of the series. Discover the wellness benefits of rhythm and beat produced in drumming circles. 6:30 p.m. Boyd Hill Nature Preserve, 1101 Country Club Way S, St. Petersburg. $3, $1.50 children. Call (727) 893-7326.
Pipe screams: It's almost as eerie as The Phantom of the Opera. Listen as several bay area organists perform creepy holiday favorites on the church's Aeolian-Skinner pipe organ. Come in costume. 7:30 p.m. Christ United Methodist Church, 467 First Ave. N, St. Petersburg. Free. Call (727) 822-3343.
World of humor: Kitchen Stories: Take in this film about a Swedish efficiency researcher sent to improve a Norwegian farmer's kitchen habits. There is a rule that they must not speak to each other. This rule is ignored, and the men become fast friends, passing afternoons sipping coffee and telling stories. Free popcorn. 4 p.m. Free. Gulf Beaches Public Library, 200 Municipal Drive, Madeira Beach. Call (727) 391-2828.
Florida Orchestra Brass Quintet: A performance by principal players including Kenneth Brown, trumpet, Robert Smith, trumpet, Robert Rearden, French horn, Dwight Decker, trombone, and William Mickelsen, tuba. 7:30 p.m., St. Petersburg College Music Center, 6605 Fifth Ave. N, St. Petersburg. $10, SPC students and staff members are admitted free. Call (727) 341-7984.