Place the chocolate brownie square on a flat surface to serve as the base of the graduation cap.

Using a small dollop of chocolate frosting, attach the miniature peanut butter cup upside down to the center of the brownie square. This will act as the top of the cap.

Place the chocolate-covered graham cracker flat on top of the peanut butter cup using another small dollop of frosting to secure it. This creates the flat top of the graduation cap.

Cut the licorice string to approximately 3-4 inches and attach one end to the center of the graham cracker using a small amount of frosting.

Add a candy-coated chocolate to the top of the graham cracker, covering the end of the licorice string, to act as the tassel button.

Repeat these steps to create additional graduation caps if desired.