Idea: bet on the headstock
You need to create a service where you promise something, takes the money there and if you don’t perform — they burn.
Example: I promise to learn English every day. Or a month to learn 300 new words.
If perform — return to slightly more volume for those who have not fulfilled the promise. Or to reduce the risks of service — you come back at least two and the winner to transfer money loser. It seems somewhere it has been… Service will earn on that some time (the month) will be the money user, which can be short-term invest.