Place cake mix in a zip-type bag. Place topping mix in another bag and label "Topping Mix." Staple bags together. Place bags into a ceramic/pottery mug that holds 1 1/2 cups liquid (no metallic decorations on cup).
Attach instructions to a gift tag on the handle of the cup:
Honeybun Coffee Cake in a Cup
Empty bag of cake mix into the coffee cup. Add 2 teaspoons vegetable oil, 1 tablespoon water and 1 egg white. Stir very well. Sprinkle topping mix over batter. Microwave 2 minutes. Let cool 1 minute in cup.
Remove from cup and cut in half lengthwise. Serve immediately.