Adding another link to the list courtesy of Built in Boston, sorting startups that are in biotech, healthtech, and pharmaceutical:

https://www.builtinboston.com/companies/location/boston/type/biotech-companies/healthtech-companies/pharmaceutical-companies?ni=5

I furnished my whole apartment with secondhand stuff back in 2018. It takes a few months to get everything you want in the condition you want it in, so it may be worth checking these sites on rotation daily/a few times a week.

-Craigslist, got a shocking amount of nice stuff off the "free" section

-Freecycle.org

-Nextdoor

-FB Marketplace/Buy Nothing groups

-MaxSold, learning curve with online auctions but amazing furniture

Good luck.