I know Amazon is different, but AliExpress sellers have sent low value packages to random addresses they have gathered so that AliExpress can track and verify the package was delivered. Somehow, they grow their trustworthiness under their eyes with the scheme.
Just a bit of info that might be semi related or make you think why would something like that happen.
This could just be brushing, i.e. orders placed so sellers can get fake reviews:
* https://clark.com/scams-rip-offs/amazon-scam-brushing-warnin...
* http://mentalfloss.com/article/567488/beware-amazon-packages...