Fun Fact: I own porn I can't watch
I have always wondered if it would be possible to build a generic reader for magnetic tapes that essentially just scans whatever tape you throw at it and then it is up to some software to decode the content. I know close to nothing about the details of magnetic recording on tape, so maybe this is just not possible with reasonable effort, i.e. you could but you would need SQUIDs to make it work or something like that.