Utensils

So my dad comes home this afternoon at about a quarter 'til three and says to me, "Would you like some chopsticks?"
I, being myself, say, "Absolutely!"
Dad comes into the room, and he's holding a box about 2'x1'x1' _full_ of paired chopsticks. You know, the throw-away bamboo kind you get for free at Chinese restaurants that come in those little red paper sleeves? Sometimes break-apart, sometimes not? That kind. And then he tells me there's another box in the van, and if I wanted them I would have to go and get them now, because he'd be going back to garage sailing soon. So I go out to the van and there is, indeed, another (slightly larger) box, likewise full of cheap bamboo chopsticks.
Eventually I get the chopsticks inside and tucked away in the disaster area sometimes called my room, and make a rough estimate of amount. The question remains, though: what on earth am I going to do with approximately four thousand chopsticks?!
What frightens me is I can already come up with half a dozen answers off the top of my head >_<

Numerology

Why is it Friday the Thirteenth is considered unlucky, anyway? I know thirteen is supposed to be an unlucky number. I know buildings sometimes skip it when numbering floors and rooms for precisely this reason. But I don't know _why_ it's supposed to be unlucky.
When I was younger, my mom told me it was due to freaky Christian symbolism stuff. Nowadays (due to this, that, and the other thing), I'm more inclined to believe it's because a bunch of people think it's supposed to be unlucky. To me, though, thirteen is not an unlucky number, no matter how many odd or downright creepy things happen in association with it.
Frankly, if I'm to go with any superstition about the number thirteen, I'm inclined to believe it's a number associated with challenges to be overcome.