According to the National Retail Federation, the top-five children’s Halloween costumes are princess, Spider-Man, pirate, witch, and fairy. That’s nicely predictable, but what about breaking out a little originality for the munchkins this year? John Derian Dry Goods has a stock of Bandicoot Lapin outfits from France, based on characters from fairy tales and legends, such as Lancelot and Donkeyskin (pictured), with details like lace cuffs, puffed sleeves, thigh boots, and feathered caps for the kind of charm that’s hard to find in typical store-bought fare ($130 to $214; 10 E. 2nd St., nr. Bowery; 212-677-8408). For more fright-night ideas for all ages, click ahead.