These levers can be used as a clever flashcard game.  Print out as many as you wish.  They fit on a standard wooden pencil, 10 will fit. (pictured with 6).  Simply fill out your terms on the cards with definitions or translations on the opposite side.  Then slide them in the notecard slot.  Slide each lever on the pencil and you are set.  

The game is played with partners sitting across from each other.  One partner lifts the lever and both try to guess what is on the opposite side first.  Lower the lever and the other partner has a turn.  Repeat until both know the set of terms.  Then remove and try a with a new set.