If you do take your cards to FL to give them away in front of the ticket windows, be sure to sign up for the sandwich board swap mentioned by two previous posters.

I cannot take credit for that gem.
Also, I think the "nobody seems to want them" with the sad face added, just might get you a pm or two or three.. wait and see... that was a very good, yet subtle approach.
And just so no one gets upset, I am just joking. I have found this thread so incredibly humorous. As we get more and more desperate to give away our cards, the offers to do so get more elaborate, and, as one who is also trying to give my last card away, I have never had so much fun being so pathetic and I mean that in a good, fun, way.
From offering free priority mail to opening up your house to those you are trying to give the cards away to, to waiting outside Disney's gates in
Orlando to personally hand the cards to the prospective recipient, I can only say DIS'ers crack me up and I'm proud to be one of them.
My fear is that our desperation will reach a dangerous level and people will start asking us to mail them the cards just to make us feel better and prevent us from going off the deep end as July 31 draws closer and we still have cards in our possession.
And so in true DIS'erness, no one posts here without taking the opportunity to mention how many cards they have left. I am now down to 1!!!