Some apps and credit cards allow you to receive cashback in Bitcoin. Instead of points that expire, you earn sats when paying for everyday bills. However, be careful: choose transparent programs with low fees; read the fine print.

Don't spend more just to accumulate; use the card for expenses you would already incur. Only Bitcoin is truly decentralized; accumulating via cashback can be fun, but don't leave your seed with third parties. DYOR about the reputation of the service and never trust blindly.