High yield savings account or CD's are both paying 5%+ APY. Check out Bask Bank as one of many examples - FDIC Insured. With rates expected to be cut next month I would suggest a 3-6month CD to lock in the higher rate as long as you know you don't need the money early. Otherwise with the savings account your money is accessible any time.
I would highly consider t bills. They are essentially risk free, as they are government bonds. You don't owe any state income tax on the interest, whereas with CDs and high yield savings accounts you do owe state income tax on the interest. (Obviously only applicable in states that have income tax). They yield as high as, if not higher than CDs.
You can purchase t bills via a brokerage account, such as an account at Charles Schwab. You could ladder the duration. For example purchase a few one month t-bills, a few 3-month t-bills, and a few 6-month t-bills.
A simpler alternative would be a t bill or short term Treasury fund, such as SNSXX if you want the same liquidity as a high-yield savings account. It's currently yielding higher than most savings accounts. You could also purchase this via a brokerage account.