I have my dads M-1 Garand rifle that he used in World War 2, it works and I take it out to the range every so often to put it through its paces. I also have my first firearm I ever owned, a little .22 rifle from when I was 8. I have my service pistol from the military and a large shadow box with my awards, medals and ranks in it. Next to that is a small collection of lightsabers, Darth Vaders, Darth Sidious, Darth Tyranus and Darth Maul's twin bladed saber. I also have a Lego Super Star Destroyer thats over 4 feet long next to a standard Imperial Star Destroyer with a collection of various Imperial vehicles. I only collect evil/bad guy stuff. A zweihander longsword I had made for me when I lived in Germany. A full length leather black trench coat. I have a couple bookshelves with about 5 or 600 books, I always get the stupid did you read all those question. No I keep them up there to look like I read...
I custom built my PC and it is water cooled so a lot of people seem to think its odd. Its about 3 feet high and matte black with blue UV lights and coolant tubes. I run a dual SLI set up on twin 27inch monitors as well.