Stackable Gingerbread Crayons. So adorable, you'll want to grab them as fast as you can! Stackable Gingerbread Crayons are a fun way to display your Christmas spirit and your creativity at the same time. Each plastic crayon includes 5 assorted colors. Includes a protective cap on the bottom. Safe and non-toxic. 5 1/2" Conforms to ASTM D-4236.