I think we all wish we could be a fly on the wall in certain situations. Maybe we'd like to see how someone close to us acts when we're not around. Maybe we're interested in knowing what groups of the opposite sex really talk about when left to themselves.
Today, give your main character some ninja abilities, so that he or she can stealthily sneak into a situation that he or she has only wished to be able to see. Where would your character love to be a fly on the wall if it were possible? Then write a short scene of what he or she sees and hears. Is it what they expect? How will this information change his or her life?