I've got a cert for 2 nights at the Boulder Adventure Lodge. These are good for any of their rooms, not just a bunk. So you can put the whole gang in there for a few nights depending on availability/dates. See rooms: http://a-lodge.com/accommodations/
I got these at a charity auction, but the guests I expected didn't ever make it into town. Ergo, I still have these 2 nights.
I'd sell them for cash, if you are amenable to making a reasonable donation to the Access Fund, (large) I'd give them to you upon confirmation that the donation was received.