We'll get right to the point: these spooky finger-shaped pens make cool Halloween party favors and are a cinch to make -- even if you're all thumbs.
For each one, cover a disposable ballpoint pen (cap removed) with a 1/4-inch layer of white Crayola Model Magic modeling material, leaving the tip of the pen exposed.
Sculpt the clay into a finger shape, forming thick bumps on one side for knuckles. Mark wrinkles and creases around the knuckles with a toothpick.
Next, use craft glue to attach a plastic fingernail near the pen's tip, leaving room enough for the pen to write. (If you like, trim the nail with scissors beforehand for a jagged effect.) Use the toothpick to create lines around the cuticle area and coat the nail with nail polish in a frightful hue.
Allow the clay and the polish to dry completely before using the pen.