THE WITCHING HOUR: Ghosts and goblins -- and pirates -- will be on the harbor area's byways this weekend. Here are some things you can do while looking for things that go bump for Halloween:


* Stuff a scarecrow. Breathe life into a bundle of straw from noon to 2 p.m. tomorrow at the Harborplace Amphitheater. All materials -- including straw, twine, shirts, glue and plastic googly eyes -- will be provided. The first 100 people will get to create the figures. (Latecomers can watch.)

* Get spooked. Ghostly pirates (actually 10 Maryland Jaycees) will be aboard a haunted ship, actually the historic Lightship Chesapeake, which has been moved to the Inner Harbor's West Wall from its usual berth at the National Aquarium. Getting JTC aboard the haunted ship is free, but donations to help pay for refurbishing will be accepted. Hours: noon to 5 p.m. tomorrow and Sunday.


* Call on a fortune-teller. Employ the psychic powers of a palm reader, tarot card reader, numerologist, crystal ball or tea-leaf reader from noon to 5 p.m. tomorrow and Sunday. Discover your prospects for love, success and money. A handwriting analyst also will be available. Where: the third level of The Gallery and the first level of the Pratt Street Pavilion, by the center stairwell. Fees range from 25 cents (for children's readings) to $15.

* See a puppet show. "Three not so Little Pigs Meet the Halloween Witch," presented by the Blue Sky Puppets, will be from 2 p.m. to 3 p.m. tomorrow at the Harborplace Amphitheater.

* Carve a pumpkin. Get tips on decorating the Halloween pumpkin from 3 p.m. to 5 p.m. tomorrow at the Harborplace Amphitheater. Designer Alice Nelson will show you how to produce eye-catching jack-o'-lanterns and decorate uncarved pumpkins with yarn, beans, macaroni and colored markers. The first 150 people get to do the decorating and take home their creations.

* Show off your costume. Check out the scariest, funkiest and cutest Halloween get-up at the Halloween costume parade from 1 p.m. to 2 p.m. Sunday starting at the Harborplace Amphitheater.

* Trick or treat. Children age 10 and under can make the rounds at Harborplace, where merchants will give out goodies to little ghouls and goblins from 2 p.m. to 4 p.m. Sunday.

* Hear ghost stories. Tales will be told from noon to 4 p.m. tomorrow at the Top of the World Observation Level of the World Trade Center. Other activities include a costume contest for children, a pumpkin decorating contest by students from the Maryland Institute College of Art, and a magic show. Prizes include free passes to the Baltimore Children's Museum at The Cloisters, free passes from Baltimore Trolley Tours and stuffed animals. Admission is free for all costumed children. Regular admission is $2 for adults and $1 for seniors and children ages 5 to 15. Children under 5 are admitted free.

* Macabre and gruesome fare: Take the Haunted Museum Tour at the Baltimore Museum of Industry, 1415 Key Highway, where you'll meet the victims of historic industrial accidents. Hours 7 p.m. to 11 p.m. today through Sunday. Admission: $5 for adults and $3 for children 12 and under. (Not recommended for children under 6). Information: 727-4808.



RIDE THE RAILS: Hop on a diesel Budd passenger car Sunday at the B&O; Railroad Museum, 901 W. Pratt St., where you can take part in a costume contest and win prizes. All riders will receive a Halloween puzzle as a consolation prize.

Trains leave every hour starting at 11:30 a.m. The last ride is at 3:30 p.m. The costume contest starts at 2:30 p.m. Museum hours are 10 a.m. to to 5 p.m. daily. Free. Information: 727-2464.


LIGHTS, CAMERA, ACTION!: Masquerade as a Cleveland Indians fan for Halloween. Smear on some blue and red war paint and take part in the filming of Major League II, starting at 8 a.m. tomorrow and 11 a.m. Sunday at Oriole Park at Camden Yards. This is the last weekend extras will be used in the filming. (Filming can last up to eight hours.) To make reservations, call 889-STAR between 9 a.m. and 6 p.m. today.