How loud will that be?

Any alkali metal? That’s not the water exploding, that’s the metal exploding

Could just be luck of the draw. I’m using the same setup and sometimes I get it, sometimes I don’t

Leather is basically cellulose from animal skins

There are many other sources of cellulose from [mushrooms](Are Mushrooms the Future of Alternative Leather? https://www.nytimes.com/2022/12/14/business/leather-fake-mycelium-mushrooms-fashion.html) to cacti to even pineapple

These are still fairly young materials and aren’t super common. You’re starting to see them more often but usually in smaller runs of more expensive brands. I personally haven’t bought any of these alternative leathers but next time I need to buy shoes I’m going to look into them again