it's a pity nobody takes in old tape cartridges, it's one of those things that everybody has tons of but not recyclable and quite useless but nobody dares to dispose of because of management security policies.

I wish it were as recyclable as something like laser printer toner cartridges.

You can refill a printer toner.
You can wash an old beer bottle and reuse it.
Old tyres you can shred it mixed with aggregates and use to lay on tarmac, or burn it to produce electricity or some countries like vietnam they use old tyres to make the soles of cheap sandals.

But what do you do with a spoilt tape cartridge? Chucked into a corner or cupboard taking up space and forgotten that's what.