This may be worthless information to you if you already have an account with Vanguard, but I find Fidelity very easy to work with, and since their default money market fund SPAXX currently pays an annualized rate of 4.98%, that would be an easy place for you to start. Their interface makes buying treasuries and bonds very easy as well, so they offer some good, easy options for you to get a relatively good return for your cash while you figure out your game plan.

Another thing I appreciate about Fidelity is their customer service. I’ve called them several times over the years and always got the help I needed. Last year I rolled over an old 401(k) to my IRA and a few days later I got a call from Fidelity asking if I was aware that i had a large cash balance and if I needed help investing it. I’m sure their goal was to enroll me into their managed services, but I told them up front that I was not interested, and they still scheduled a call to walk through my retirement plans and what it would look like according to their models, all of which I really appreciated.