I think just a high-pressure water jet is enough (if the machine is designed to have its operating cabinet water-tolerant, and has drainage channels large enough to not be clogged with paste, that is).
With one coin, you can pick your target up and drop it until it's crushed (physically).
Not really sure about the part in parentheses, but I got nothing elseI want to play a "Yukkuri Catcher" that's basically a claw crane, but it only picks up and drop yukkuris [instead of puttting them in the prize chute]*Dwick!?**Splat**Clack**Violent movement**Vomit**Splurt*Don'... Get...*Grab...**Movement of machines*