Expensive Things You’ve Broken

I had never seen this video before of a guy talking about a priceless antique wax cylinder for a phonograph that he then breaks on camera. Sad and hilarious.

I never broke anything that was priceless, but I tend to be accidentally clutsy. I flung a small cardboard box and broke a framed picture I just fixed. Not expensive but stupid.

Aside from cars, what is the most expensive thing you have broken?