Pottery Barn Kids' red dragon costume ($47-$63 ... and red tulle at the jagged hem. Target's blue ninja costume ($20) will have your trick-or-treater looking just like a ninja with a black ...

Liberty Imports Giant Foam Great Swords ($16) two pack comes with one red and one blue sword ... blade and plastic core meant for kids, teens, and even adult costume fun. Nerf's Vantage N-Force ...