Note that demonstrating gravitational attraction with an apparatus similar to Cavendish's doesn't need to be nearly as precise or delicate - the hard part wasn'

Note that demonstrating gravitational attraction with an apparatus similar to Cavendish's doesn't need to be nearly as precise or delicate - the hard part wasn't showing gravitational attraction, it was measuring it so that the mass of the Earth (and thus other celestial bodies) could be determined. The simpler form of the experiment that merely shows that bodies attract one another can be done in your living room (modulo pets and children). Several of the anti-Flat-Earth YouTubers have done it, the point being to enable flattards to do it for themselves (should they be so inclined) so they're not relying on reptoid NASA Illuminati shills and their propaganda.