Here's a stone-age variation of the classic party game.
Before the party, cut out and color a two- to three-foot triceratops, minus its nose horn, from posterboard. Cut out and color the nose horn and pierce it with a large tack. Tack the dinosaur to an outside wall (if indoors, use a bulletin board).
Spin each blindfolded player a couple of times and let her pin the horn. Mark each try with the player's name. The one who gets the horn closest to the nose wins a prize.