Wow, they would have freaked at my experiment involving solid rocket engines having testing for different thrust strengths in differing oxygen environments in 8th grade.
As excepted it did little until it got so rich that it caught the metal stand on fire and burned everything up in about 1 second.
Made a heck of a bang.
Perhaps a kid can remove the LED display from a $5 alarm clock from wal mart. And place it in another casing, and then call it a clock