Contractions

Today in class, I gave each student an index card that had a contraction or the two words that make up a contraction.  The students had to quietly walk around the room and find their partner.  When they found their partner, they had to do a little hand clap that I showed them.  The students really enjoyed moving around the room, finding their partners, and performing the hand clap.   Does anyone have any other ideas for quick and easy contraction review activities? (or antonym/synonym ones)