My FIL wants me to sew him a nightcap out of flannel. Any ideas where I can find a pattern for one?

Nightcap Coffee Mix 2/3 cup non-dairy powdered coffee creamer 1/3 cup instant coffee granules 1/3 cup sugar 1 tsp. ground cardamom 1/2 tsp. ground cinnamon Combine all ingredients in a bow and stir until blended well. Store in an airtight container. Give as a gift with serving...