If you haven't already, look into Certificates of Deposit ("CD") at your local bank. They're FDIC insured (so if the bank goes under, you're covered, up to something like $250k) and you don't have to worry about losing the principal amount you put in. If you ever need to withdraw that money in case of an emergency, you only risk losing out on the interest. Instead of dumping a ton of money into a single CD, look into CD laddering wherein you setup multiple CDs that expire in 3 months, 6 months, etc or some other cadence that you're comfortable with.