Halloween Flags : Hallowe’en, or Halloween, is a tradition celebrated on the night of October 31, most notably by children dressing in costumes and going door-to-door collecting sweets, fruit, and other gifts for trick-or-treating. Celebrate Halloween this season with our outdoor Halloween decorations. We have a great selection of Halloween garden flags, pennants, street pole banners, and more! IF you’re planning a themed party, check out our pirate decorations and Jolly Roger items below. Ever thought of a creepy patriotic Halloween? You know we have the supplies for that.