Nightmare Before Christmas School Set -- Bundle with 2 Nightmare Before Christmas Pens and Sugar Skull Stickers (Nightmare Before Christmas School Supplies). Nightmare Before Christmas pens feature: Black ink; 0.7 mm line; Metal clips; Comfort grip. This Nightmare Before Christmas gift set is perfect as Nightmare Before Christmas school supplies and office supplies. Includes bonus sugar skull stickers. Also great as Nightmare Before Christmas decorations. The perfect addition to any Nightmare Before Christmas pen holder, pencil bag, pencil box, or anything else. Officially licensed Nightmare Before Christmas merchandise. Featuring Nightmare Before Christmas characters Jack Skellington, Zero, and Sallie.