All those Chinese products with free shipping were like that. They'd show up one day randomly. Also, I buy most of my stuff online so there's always something in flight. Books, toothpaste, whatever.
I use 17track for that. It's an app that I drop all my AliExpress/Amazon/eBay tracking codes in and I will get a push notification that the package has been delivered. Don't need a camera monitoring my neighbours front door for that.