A family friend as I was growing up was a professor. He used to spend the summer painting houses to make extra money, and now that he's in his 60s he makes the best money he has ever made--about $45,000 a year. He has 3 or 4 books published, many articles etc.
Maybe you should check the Chronicle of Higher Education job listings--they often have alternative career listings/advice for PhDs who want to work outside academia. If you can use the inheritance to tide you over until you can make a bigger move, it would probably save everybody much grief in the long run--patching together piecemeal hourly jobs or a bunch of very low-paying, high-stress teaching jobs can sometimes just prolong your misery, and they are nothing but a dead end.
You can research and write, right? Can you write articles for the local newspaper? Won;t pay much, but perhaps you could follow local politics?
I'm a grad student. Here's an ad I saw a few months ago and saved--is probably legit, and such places are probably always looking for people who can write well.
AD TEXT: (the "I" here is not me, it's the guy who wrote the ad)
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WRITER [OFF-CAMPUS]
Location: Freelance (Off-campus)
Pay: up to $1200+ per project, Hours: Make your own hours
I was one of the creators of SparkNotes (
www.sparknotes.com), the world's most popular academic study guides and now a subsidiary of Barnes & Noble Inc. I've recently begun working on a new publishing project that needs excellent writers who can write on a wide variety of nonfiction topics. We are backed by a major publisher and have a significant budget for the project. If you are interested in applying to write, please email me a current resume and two writing samples that demonstrate your ability to explain a nonfiction topic clearly and concisely. No academic papers or fiction samples please.
Contact: Justin Kestler 303-379-9604
jkestler@post.harvard.edu
------------------------------------------------
END OF AD TEXT, back to my posting...
In your husband's surgery, does he use any specialized equipment? Is it possible for your husband to do some consulting for the company that makes it? I am just thinking of other ways your husband could use his MD. Working for a pharmceutical company or for a medical devices maker could result in a far higher salary than he could make as an MD--and no malpractice insurance needed

.
Good luck with it all.