What objects do you value and why?

My home built PC rig because it's unique, it's mine and it's damned expensive, my house because of the time, energy and effort it took to pay it all off before I was 30 and my complete collection of hardback Tintin and Asterix books (comics really) becasue it has taken me 15 years to collect. Everything else is essentially replacable give or take a few things... of course I could drop it all in a heartbeat if there was a threat to things which are valuable beyond simple money, my family and my kids.