This tote bag, originally released as a knockoff of Goyard's St. Louis bag in 2007 might actually be the most popular designer handbag in existence, at least from what I've seen "in the wild"--that is, on the streets of metropolitan areas and throughout international airports. Since its release, it's seen one major redesign where they replaced the more ornate textile lining with a simpler striped pattern (likely to save time/costs as this bag moved into higher volume production).
Luckily, that seems to be the only significant "cost-cutting measure" they've applied to the continued production of this item; it still features the (mostly) decorative straps that hang down from the sides of the bag, but in a few certain situations that call for it, such as carrying a large amount of smaller or lighter objects, the straps can be cinched to shrink the opening and help secure what's inside (at least a little bit).
In addition to the zippered pouch on one side of the interior, the bag also comes with a flat pouch along with a leather strap that you can use to attach the pouch to a D-ring mounted near the opening, or even just loop that strap back onto the pouch itself to use as a clutch; I've never really used it for either of those purposes, mine just sits at home nearly untouched while the bag itself is probably the most used luxury product I own.
While I can't credit Louis Vuitton for having really "invented" anything since at the end of the day, this is just a reusable tote bag that is nearly functionally identical to something you could pick up at the grocery store for less than five dollars, the craftsmanship (and admittedly, the branding) just inspires me to go out of my way and actually make an effort to actually use a reusable shopping bag on a regular basis instead of only when I can be bothered to remember to bring it out of the house, to the car, before realizing I completely forgot about it after I've already gotten to the grocery store.
