Professional data recovery. Then, now and in the future!
An actual data recovery company and not the random dude at best buy.
Everything you try potentially makes the above more difficult or more expensive or outright impossible, especially if it makes any abnormal noise.
A recovery company would likely transfer the platters to a working drive.
Does it make any sounds? Does it spin up when it gets power?
Data Hoarder
We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.