Not exactly (or at all, really) a Prime thing, but is anyone else in the Vine programme where you get sent stuff to review? I got invited some time late last year, checked it a few times, saw absolutely nothing of interest and ignored it until a few months ago. Some decent items do pop up on there from time to time. I've had all sorts of stuff so far: two cat trees, a Belkin MagSafe charger, a Belkin 3x USB-C charger, some printer cartridges, an ethernet cable, a rechargeable air duster, and some other assorted stuff.
There's heaps and heaps of absolute crap on there though, the branded items are fairly few and far between and you do need to be quick as they vanish almost instantly.