I once had a bass sent to me literally just loose in a builders clear plastic sheet sellotaped up.. You could see right thru it and see exactly what it was, a single layer of plastic, that's it.. it had no actual protection at all, they may as well have just tied an address label round its neck and sent it like that.
I had a bit of a laugh with the postie who delivered it, he couldn't believe it either.
Incredibly it was undamaged, and was absolutely fine..