Melt candy melts in a microwave-safe glass or ceramic bowl in 15-second intervals, stirring after each interval, 1 to 3 minutes. Scoop a heaping tablespoon into a resealable plastic bag and set aside.

Working 1 at a time, use a butter knife to spread the candy melt over the top and around the sides of each cookie. Place on wax paper.

Seal the resealable plastic bag and snip off 1 of the corners with scissors. Pipe stripes over the top of the cookies in a back-and-forth pattern. It's okay if the stripes are uneven or at different angles.

Before the stripes dry, stick two candy eyeballs on the top of each cookie.