Diy Sarah Labyrinth Costume . The back of the necklace is seed beads on wire with a basic spring clasp and a chain hanging down the back. Labyrinth halloween costume step 1: Pin on Coolest Homemade Costumes from www.pinterest.com The back of the necklace is seed beads on wire with a basic spring clasp and a chain hanging down the back. Each scallop is about 4″ wide. Gift guides gifts for her gifts for him.