Basic, mindless, catchall 2% cashback cards exist. I keep a Fidelity, since you can set it to automatically points every time you earn 50$, which can immediate

Basic, mindless, catchall 2% cashback cards exist. I keep a Fidelity, since you can set it to automatically points every time you earn 50$, which can immediately go into a brokerage account and be held in a moneymarket fund earning ~4% annual interest. Which is not a huge deal, but it's a very hands off approach.