The Midrash tells us that the world was created in the month of Tishrei. That's also when Adam was created – and then, with one of his ribs, when Eve was created – making it the birthday of this first man and woman.
To make your own "Happy Birthday to the World!" banner, you will need: a long, horizontal piece of paper, preferably white; magazine cut-out pictures; home-drawn pictures; Rosh Hashanah shapes; crayons and markers; stickers; stamps; scissors; tape; and glue.
Create a mixed-media collage using the materials above, including the words "Happy Birthday to the World!"
Hang it up for the holidays.