Can't speak to the bottle

"The Bottle" was probably a product tie-in or, more likely, just a way for some Amazon seller to create their own unique listing by creating a bundle. If it's the later, obviously the technique failed and now a bunch of other sellers are offering the same package. It's getting popular to bundle a NFC Tag/Sticker so competitors can't list the same product.

Here's an example. That's a totally generic "action cam" that hundreds of sellers have on Amazon but because that particular listing bundles a their NFC tag, that only that particular seller offers, no other listings can compete with them. There are a bunch of other sellers that sell the exact same camera but include their "totally unique" NFC tag. At some point the counterfeiters show up and that "totally unique" NFC tag gets copied and the whole amazon loophole just falls apart.

Amazon sellers compete for what they call the "buy box," or the "buy it now/add to cart" buttons, and by adding an "extra" like a water bottle or NFC tag they won't have to compete with other sellers or Amazon itself for the "buy box."

Buying cheap generic shit from China, like I do, often requires more effort than it's worth. It's a whole helluva lot easier hitting that "other sellers" link and finding the "Fulfilled by Amazon" (FBA) seller (Warehoused/shipped/supported by Amazon) or the American "Merchant Fulfilled" seller that has already imported and inspected the goods from China. Either one of those adds a middleman, and you'll pay for that middleman, but you get your goods a few weeks faster and somebody who understands English if there's a problem.