Illarion Gordon, an artist in Russia, creates "melancholic and existentialist designs that would never exist in real life from real coffee brands." That's a real shame because I can definitely see an Adventure Time-brand coffee succeeding. It would be ideal for rising in the morning and eating with bacon pancakes for breakfast.
We shall never know for sure what happened to Princess Coffeebean. But we know that she would want us to enjoy these rich, delicious coffee grounds that we found on her throne.