There is a gif I’ve seen that demonstrates this using a water balloon and a drill. The knot of the balloon is in the drill chuck, and when you turn on the drill the balloon spins into a (relatively) flat disk.

I’ll try to find it and add a link here. Prepare for disappointment.

Edit: best I can do is an Instagram reel (from a great creator who covers lots of physics stuff) https://www.instagram.com/reel/DKLwz5TxmIu