I keep my HSA funds in an account in Fidelity, solely invested in a covered call ETF (QYLD) and have the dividends deposited to the same account in a money market fund (FDRXX). The ETF currently has a yield over 11% and the money market has a yield of 4.90%. On a monthly basis, I take out a fixed amount that is less than the monthly dividend and use it for general expenses.
I pay all medical bills with a credit card that currently is returning 2.5% cash back that is deposited into a different Fidelity account with the same yield of 4.90%. Lastly, I store all significant medical invoices in a folder. Although, this will ultimately leave monies in the HSA, it is nice to know that the income provided will last my lifetime and provides a nice cushion for unexpected expenses.
Looks like the Dividend income has been steady. I have my HSA invested in FXIAX and FDRXX. May need to look at QYLD.
https://www.nasdaq.com/market-activity/etf/qyld/dividend-history