My dad does the same thing, bringing in things that we might theoretically have a use for someday. We have boxes of old wires, although I can't remember the last time he did a wiring project, mountains of dead hard drives that he had been going to melt down (which, as it turns out, you can't do), and piles of metal casting paraphernalia everywhere. It's been there for years, and that's just in the house itself, not the garage or the shed.

And then he gets mad at his mom for not throwing away things that no longer have any use, failing to see that he is exactly the same way.