Anything which is rigid and is on steady ground should be able to be balanced, even though the balancing point may be very tiny.
Find some objects, large and small, and see which of them you or your family and friends can balance. See if you can get an object to balance for more than 1 minute. Try a dining room chair balancing on one leg for example (tip: always be there to catch it). Admire gravity, as well as your ability to sense touch and weight to be able to balance objects so finely.
