What do I need to do to earn rewards from God? (1 Corinthians 3:11-15)

Our listener asks, “Hello! First I want to say thank you! Because of your clear gospel message, I came to trust Christ as Savior. I know that I am eternally saved because of what Christ alone did for me! (Death burial and resurrection alone) Amen! Now unto my question. In 1st Corinthians 3:11-15, Paul speaks of the believer earning rewards once they get to heaven or losing rewards they could have had. It lit a fire in me that wants to do something for God (NOT to get saved BUT because I am already). My question is, specifically speaking, what sort of work, according to the scriptures, can I and anyone else as a born again believer do to earn rewards in heaven? I want to reap up as much rewards as possible! Thanks for taking the time to read my question and have a blessed day!”