Puppy tricks are used not only to entertain yourself, but also to help the puppy grow in confidence and use his/her intelligence. Try a few of the following: Shake hands:
Place your puppy in a sit and kneel in front of him, take a piece of treat and slowly put the treat close to his nose and lead his nose up, when he leans up toward the treat his right paw will come off the ground. Just before that happens say "Shake". Once he begins to associate with his actions you can just reach for his paw and say "Shake" and he will!!
Get your puppy excited by tossing around his favorite toy (ball). After a few tosses and fetches, play with the ball in your hands and tell the puppy "Speak". Eventually frustration will cause him to bark. Reward him immediately by throwing the ball.