I saw this idea on the internets and it was so cute I thought I'd give it a try. I used a regular hen egg sliced crosswise to make the bun, and just cut smaller portions of the fillings (cheese, ham, lettuce, onions, avocado, pickles, tomato and ketchup. The "fries" are carrot sticks.
You could make a super cute miniature version with a quail egg.
Have a great Thursday!