The local Athens Big Brothers Big Sisters program is always in need of donated tickets for OU games. Many of their matches are OU students who get in free, but would like to take the kids they mentor to the games. These are local kids who would never get the chance to attend a game if not for their Mentor.
I've donated unused tickets before, just give them a call, send em in the mail, or tell the Ticket Office to put them under BBBS at will call... they always get used and ya feel good doing it.