Would you like to make your guests think a little bit about eternal problesms of the mankind and other important things...If yes, I have an idea how to do it.
Write down sayings of wise men to the paper (you can take sheets of different colors), fold them up, attach to toothpicks and stick into fruits. So, when guests would take the fruits, they would be very interested to unfold these short-letters read the content... let them think a little about their future or may be past events...