We could have a marriage advice, message in a bottle set up where guests can write on pieces of paper and put it in the bottle for us to open later. I have some large vases and we would just need sand, rope or twine, and some message paper.
Cute. This would be a cute Christmas breakfast, or a prize for being good in the classroom. The students could get a certain amount of points altogether, and then they get a special breakfast from the teacher, instead of the regular donuts or something.