What's the most expensive thing you broke as a kid and what's the story behind it?
Mine was our CRT TV. I would rapidly push the power button on and off because I thought the picture coming and going looked cool but eventually it fell inside of the TV. I think I later stuck a magnet on the TV.
Not looking for Reddit answers like "My parent's marriage"
I'm not sure about "expensive", but it was priceless.
My mom had a really gorgeous piece of petrified wood about the size of a cup coaster and as a young kid I was obsessed with it. So one day I broke into her jewelry box where she kept it and stole it to bring to school for show and tell. Everything was fine until I was getting on the bus to go home and I tripped with it in my hand. It shattered like glass and so did my poor little heart.
I remember crying all the way home where I tearfully confessed to my thievery and apologized up and down to my mom. She honestly wasn't very angry, and was a lot more understanding than I thought she might be. I don't remember what happened to the wood afterwards but I don't remember seeing it ever again so I wonder if she trashed it? It was so beautiful, so that would be a total shame.