My first thought goes out to anything that can bring me financial freedom without anything exaggerated. My 2nd thought mainly goes out to something health-related and being able to cure while making people younger.

My 3rd thought would be not to want any superpower for a day as if I would actually get one, everything I know about the world and my entire belief system would totally crumble likely causing high anxiety not knowing or understanding what happened.

My 4th thought would be the superpower to get rid of the rule that it only last 24 hours.