One checking account.
One primary savings account but several money market accounts and a credit union account which we mostly opened back when the insurance limit was $100k and we wanted to spread out the cash among accounts to keep each under $100k. We could consolidate now that the limit is higher.
Of course have multiple brokerage, mutual fund, 529 and retirement accounts but most of those we don't touch on a month to month or even quarter to quarter basis. We've consolidated a number of those with our financial advisor so that's made the paperwork a lot easier.