[rwmj]

I immerse my old HDDs and SSDs in full sugar Coke.

[andai]

I know you're probably joking, but would this actually work? I know it dissolves teeth.

[rwmj]

I'm not joking! Full sugar soda is cheap and readily available, it's acidic and it does appear to damage the electronics. In theory at least the sugar should also gum up the innards of HDDs.