White painted stones by Natasha Newton - These would make a nifty place card. Just hand your guests a business card with a matching design on it. Then they get to match the card to the rock at their place. They could then take the rock home as a keepsake.
Great idea: "For this blanket, Jane used double moss stitch and knit five "scarves" that were then sewn into one big blanket." Find a scarf pattern (or two) and then make scarves in to a blanket. More interesting than knitting a whole blanket!