My stamp club does a monthly mystery item swap. You agree to make a card with said item, but you won't know what it is until you get it.
Last month we were given some brightly colored British postage stamps to use. This is what I came up with for the card swap:
The Fine Print: Main stamp by Penny Black, air mail banner by Lawn Fawn "You've Got Mail," designer paper by Provo Craft, and postage from Jolly Old England.