I'd love to reinvest the money I earn on Farcaster each week (prob $10-$20) back into the ecosystem by trying different mini apps / features. Ideally things that don't involve simply buying & selling tokens. 

What should I check out?

Investing @variant, writing at https://backoftheenvelope.substack.com/

Caveat: I also don't just want to give money away. Hoping that if I'm spending money on something there's clear utility (such that it'd be a repeatable / legitimate behavior if I wasn't just playing with "house money")