It's been a while since I've seen any good urazawa, that being a Japanese word that loosely translates to a secret trick or shortcut to doing something, and commonly means something like "household tips" or life hacks. Urazawa are kind of a counterpoint to product design in that they're about solving problems, but through the user's behavior rather than refining the form of something. As we saw in Lisa Katayama's book on the subject, they can be something as simple as using newspapers to clean windows (to leave them streak-free) or as involved as boiling spinach to get coffee stains out of a carpet.
Anyways, yes, I've just stumbled across a good one. Getting a down comforter into the duvet cover is a task I spend an absurd amount of time trying to complete—I dread laundry day because of it—and I can't think of any practical, affordable re-design of either item that would simplify the task. So thankfully Scott Culley here demonstrates his "Magic Burrito" method: