The guy built an engine designed to burn tokens: https://miro.medium.com/v2/resize:fit:1100/format:webp/1*85x...

Each little critter in there is a component that both consumes and produces tokens, and it runs in a feedback loop, so each token inserted into the machine will cause it burn exponentially more tokens in order to output yet another token.

Ostensibly its purpose is to create software, but what it does is very efficiently burn tokens as fast as possible.