Birthday Bulletin Board Cakes Display. Print these cute cakes out for your birthday bulletin board where you can write the child's name and birthday on the cake base (lower layer) to make a fun and sweet cake display! Each month is a different color. Save and re-use or re-print each year! Each cake measures about 7" x 5" and print 2 per page for each month. Prints on regular paper. Laminate and use dry erase!