I had a friend in college who will one day become this man. Here's one exemplary anecdote:

driving down Comm Ave
Friend: "Stop the car! Stop the car!"
car stops, friend points to large slab of concrete sitting on the curb
Friend: "Do you think we can haul that back to the house?"
Us: "What?!?!"
Friend: "You can't let a good piece of concrete go to waste."

He managed to put some of the junk he collected to good use, like building a shanty town on our roof using discarded tarps, lawn chairs, and mariachi music blaring over the stereo.
Reversing a Tide of Clutter
(via Making Light)