Calendar cakes are perfect for any dated event like a birthday or anniversary. It is a simple cake, round or heart shaped, with flair and an edible image with a calender marking the specified date you are celebrating.
You can use it as the decoration of the cake or as a burn away layer that will revel a different message beneath it, after it burns away.
For burn away images choose the regular wafer paper, not the thick version.
Learn how to design your calendar cake edible image without the use of external apps.