Most of my savings is in IRAs, which are mostly invested in Vanguard index funds. I try to keep about what I’d need to live on for a year in short-term investments and high-yield savings, any extra in some longer-term investments. I have a couple of CDs, some T bills, an I bond, some stocks. I’ve been shifting money around lately depending on where the best interest rates are.
Bread Savings has a 4.88% rate (5% APY) right now, no fees. The T bills have rates between about 5.3% and 5.5%. Right now, even 4-week T bills have rates over 5%.