We made our own rafts. First we stuck a ball of blu tack into the bun case. Next we pushed the cocktail stick into  the ball of blu tack. After that we added the paper sail to the cocktail stick. Then we used sellotape to stick the paperclip to the base of the bun case. We made the raft move by using a magnet.  The paperclip is magnetic and it was attracted to the magnet.