1Heat oven to 350°F (325°F for dark or nonstick pan.) Make and cool cake as directed on cake mix box for 12-cup fluted tube cake pan.
2Place cake on serving plate. Stir together frosting and chocolate syrup; reserve 1/4 cup of the frosting. Spread remaining frosting over cake. For straw hat, place 1 waffle bowl upside down in center of cake. Stack 5 more bowls on first bowl.
3For hair, cut fruit snack into 14 (6-inch) strips and 14 (5-inch) strips. Cut each strip lengthwise to within 1 inch of top of strip. Place one 6-inch and 5-inch strip together, pressing together at uncut ends. Repeat with remaining strips. Randomly press pairs of strips on top of two-thirds of cake, overlapping as needed and allowing strips to hang over side of cake. Spread reserved 1/4 cup frosting over top of hair.
4For brim of hat, break remaining waffle bowls into 5 or 6 pieces each. Randomly press waffle pieces on top of cake, overlapping and tucking pieces as needed. Allow waffle pieces to hang over side of cake and over fruit snack strips. Cut pieces of remaining fruit snack for eyes and nose; press on cake. Store loosely covered.