A few years ago, I bought (from ebay...) a NOS mavic 230Tib. very pleased I was, until it turned up. In a black bin bag. no tape, no padding, just loose, in a black bin bag.
Unbelievably, it arrived in perfect condition, despite the bag being shredded.
I try to use corrogated plastic sheet & duct tape, lightweight, stiff, and tough.