Demonstrate bacteria cloud when flushing toilet.
balloon, talcum powder, pin
Put some talcum powder inside a balloon and blow it up.
Shake it before popping it with a pin.
Observe cloud of talcum dust.
This simulates a cloud of bacteria from a toilet when it is flushed without the seat lid being closed.
Additional Information: This activity leads into a discussion on hygiene and the global issue of lack of sanitation for millions of people