I bet we all own something that we'd never give up or sell. Reddit, what is the coolest thing you own/most prized possession?

My dad has a 1965 Chevrolet Impala SS and a football signed by Joe Montana. I've always been fascinated with the Impala and all the work he did rebuilding it and customizing it from the ground up. Joe Montana was one of my dad's favorite players growing up, so it holds a special place in his heart too.

I love talking about both of those things but would love to hear from you about what cool things YOU have!