While I don't foresee that happening, I know my OCD is bad enough that I'd probably be hooked on collecting it for you folks!

The other way I pick up dice is go to the gift shop, they sell for $1.00 - $2.00 a pair (and others will trade dice for chips).

I wondered about that. It's acceptable for you dice collectors to get the dice they sell in the gift shop? That's almost as easy for me as grabbing pens/matches/coin cups and the lot.

On a semi-related note, are the punch-cancelled decks of paper cards also something swag collectors care about? I've often gotten those free when signing up for player's cards, and have thrown them away as so much trash.