What was the most important thing you broke, and what was the aftermath?

I was 12, asked to carry a ceramic urn for my aunt while we were loading up the car for a trip. I dropped it and it turned out they were the ashes of her grandfather that just passed.

We were driving to some lake to spread his ashes. I felt bad, but she was devastated. Not really a dignified thing having your ashes cleaned up by a swiffer wet jet..