Make a selection market (where anyone can add a new answer). Anyone can add their username as a choice. At the end of [time period], whichever option is ranked the fifth most likely to win gets 999,960 mana. Users 1-4 get 10 mana as a consolation prize.

Claim to put up a billboard based on a whatbait market's result, then dump mana randomly into the market

https://manifold.markets/standard/what-logos-will-be-on-the-agencys-f

bunch of ideas in here tbh https://manifold.markets/strutheo/what-should-we-do-with-the-tactical

maybe one of these :)

/strutheo/tactical-nuclear-mana-spirit-bomb-c
/strutheo/coolfold-allpay-charity-auction-202
/strutheo/coolfold-5050-charity-raffle-2024