This is a very good idea! I sent this post over to my mother and I think it may have convinced her to start establishing this sort of infrastructure for our house; she spent a chunk of yesterday compiling a spreadsheet of our staple non-perishables. I'm not sure how easy it'll be to convince my father to adopt the new protocol (he's the house's main Shopping Person, and often somewhat stubborn about this sort of habit-change), or whether or not it'll end up sticking as a habit in the long run, but it's a good enough idea that I hope it does.

(Although there are constraints on what's functionally non-perishable for my parents around this time of year in particular, since they'll need to throw out anything with the wrong ingredients when Pesach comes around.)