What do I do with old greeting cards?

We had a stack of greeting cards and I re-cycled them creatively.  Some became gift tags using my handy dandy paper puncher, others became new greeting cards (if the back side doesn't have writing, you can cut it out and fix it on a new blank card, others became bookmarks.  I'll post pictures of some of these soon - part of the problem is I gave a bunch away before I took pictures of them.  Note to self: photograph first before gifting!