Bulletin Boards, Classroom Doors and Part 3. Could put what they took home from the day.
Owl Theme Birthday Board
Smarty Pants Owls Theme Birthday Board: This adorable owl theme birthday board will look fantastic on your classroom wall or bulletin board! Each branch of the tree represents a month of the year and balloons are used to display your students' birthdays. By Pink Cat Studio
Birthday cupcakes classroom chart :)
Another "why didn't I think of that" moment. I've been trying to figure out a way to display birthdays, without taking up a lot of space. Duh!