Batman, Indiana Jones, Iron Man, and Tina Fey, er, Sarah Palin are some of the popular picks for Halloween costume themes this year, according to the Sewing & Craft Alliance. Chances are you'll see a few McCains and Obamas, too, in search of candy if not votes around your neighborhood on Friday, October 31. (The costume shown is a monster from the organization's Web site.) 

If you're hoping to save a few bucks by making your own costume or want the challenge of creating a DIY design, know that you don't have to be a sewing expert to design a good-looking getup. "Many patterns are for beginners, and the instructions are clearly written and generally not complicated," says Linda Griepentrog, a spokeswoman for the Sewing & Craft Alliance.

To keep what should be a fun project from fraying your nerves, look for a costume that's easy and inexpensive to make—your kid will likely wear it only once. A historical-reproduction costume, for instance, might win praise from friends or a prize at a school or town contest, but it could be a lot of work.

No matter the outfit you pick, follow this advice from Griepentrog, who's been sewing costumes for decades:

* Factor in the weather. Don't choose a skimpy costume if the Halloween weather tends to be chilly in your town. Allow enough room for your child to wear clothes under the costume or consider making it out of an insulating fabric, like fleece.

* Design for safety. Avoid using dark materials and add reflective ribbon to the costume, especially important if your child will be trick-or-treating at night. Hem the costume short enough to prevent tripping and don't sew on a long tail for, say, an animal-themed costume.

Make large eyeholes in the mask. Or use face paint instead of a mask. If the costume material is flammable, remind your princess or pirate to be careful when near lit jack-o-lanterns. (Note: The labels on the ends of bolts of fabric might have information about flammability, especially if the fabric could be used for children's sleepwear. Unless it is specifically stated that a fabric can be used for children's sleepwear, you can generally assume that a fabric is flammable.) You'll find more safety advice for costumes in