What are the options available for safe, short-term parking of funds?
Savings accounts are the go-to option for safely depositing funds in a way that they remain accessible in the short-term.
There are many options available, and any recommendations on a specific account from a specific institution depend greatly on the current state of banks.
As you're in the US, If you choose to save funds in a savings account, it's important that you verify that the account (or accounts) you use are FDIC insured. Also be aware that the insurance limit is $250,000, so for larger volumes of money you may need to either break up your savings into multiple accounts, or consult a Accredited Investment Fiduciary (AIF) rather than random strangers on the internet.
I received an inheritance check...
Money is a token we exchange for favors from other people. As their last act, someone decided to give you a portion of their unused favors. You should feel honored that they held you in such esteem.
I have no debt at all and aside from a few deferred expenses
You're wise to bring up debt. As a general answer not geared toward your specific circumstances:
Paying down debt is a good choice, if you have any. Investment accounts have an unknown interest rate, whereas reducing debt is guaranteed to earn you the interest rate that you would have otherwise paid.
Creating new debt is a bad choice. It's common for people who receive large windfalls to spend so much that they put themselves in financial trouble. Lottery winners tend to go bankrupt. The best way to double your money is to fold it in half and put it back in your pocket.
I am not at all savvy about finances...
The vast majority of people are not savvy about finances. It's a good sign that you acknowledge your inability and are willing to defer to others.
...and have had a few bad experiences when trying to hire someone to help me
Find an AIF, preferably one from a largish investment firm. You don't want to be their most important client. You just want them to treat you with courtesy and give you simple, and sound investment advice. Don't be afraid to shop around a bit.
I am interested in options for safe, short "parking" of these funds until I figure out what I want to do.
Apart from savings accounts, some money market accounts and mutual funds may be appropriate for parking funds before investing elsewhere. They come with their own tradeoffs and are quite likely higher risk than you're willing to take while you're just deciding what to do with the funds.
My personal recommendation* for your specific circumstances at this specific time is to put your money in an Aspiration Summit Account purely because it has 1% APY (which is the highest interest rate I'm currently aware of) and is FDIC insured. I am not affiliated with Aspiration.
I would then suggest talking to someone at Vanguard or Fidelity about your investment options. Be clear about your expectations and don't be afraid to simply walk away if you don't like the advice you receive. I am not affiliated with Vanguard or Fidelity.
* I am not a lawyer, fiduciary, or even a person with a degree in finances. For all you know I'm a dog on the internet.