[gtsteve]

A search engine for physical shops, which indexes their items and inventory so you know where to go when you want a specific type of cheese for a recipe and you're in an unfamiliar small town.

Of course you can just ask locals but that's so analogue.

[solardev]

I wish Google Shopping did this. They have the code for it, but right now it's all paid placements instead of organic inventory levels.

Maybe it's something Square and the bread one can team up and offer?