Take my pantry stocking habits -- Virgo meets domovoi-in-trickster-mode (minus the grey beard, tails little horns, and male part). When cans, bottles, or little packets of stuff come into the house, I use a permanent marker to write the expiration date on the top. Saves me making the dreaded last-in-first-out mistake when I open a can of coconut milk. It's also handy when I do buy sauces or condiments. Sometimes I get all set to try a new recipe, knowing I do have this one specific ingredient tucked away, because I made something with it not long ago. When I finally do locate the jar and pull it out it's easy to see that the lid says 08/08 on it, letting me know that 1) maybe I don't use this particular substance that often and 2) maybe I don't want to be using it right now. It's also really a really helpful guide if one ever does clean the pantry.
I have little tins for my spices -- those are falling to the brush the next rainy day we have. As to how I plan to (once again) organize all the recipes I've saved? Look out world!