With all the gear heads on this forum, this Popular Mechanics article about tech developed (or bought out) by Amazon would be of keen interest to many here. Check this out.
https://techcrunch.com/2018/07/19/a...-helps-you-shop-for-those-odd-nuts-and-bolts/
https://techcrunch.com/2018/07/19/a...-helps-you-shop-for-those-odd-nuts-and-bolts/