I’ve already mentioned Debbit a time or two, but there’s a neat hack that it helps enable: Some credit card issuers will give you a monthly small balance waiver for balances under a buck or two, and often those issuers correspond with credit cards that you keep in your sock drawer anyway (Barclays, Discover, USAA, and US Bank are examples).
For those sock drawer cards, I suggest set up a recurring small charge in Debbit once a month as an Amazon balance reload, Xfinity bill payment, AT&T bill payment, or similar and you’ll earn a free $10-$20 / year for each card. You’ll also prevent them from being closed for non-use, which does happen.
Will you get rich like this? No, but at the end of the year you can buy a $10 Chipotle card with your Amazon balance. Is it worth your time? Maybe not just by itself, but multiplied by a few cards and convolved with having debbit set up for bonuses, it will pay off in due time. Also, at the end of the year through some advanced tom-foolery known as “paying with a gift card”, you can turn it into a burrito* to reap your rewards.