Short verdict
Buy in Korea. Best purchased during a Korea trip, usually because of local access, price, testing, or limited bundles.
Daiso is best for compact lifestyle goods, stationery, organizers, and small travel helpers.
What to know
Buy small pouches, cable organizers, sticker sheets, compressed towels, and Korea-only cute stationery if they fit your luggage.
What to avoid
Skip fragile storage bins, bulky kitchenware, and anything you can buy cheaply at home.
Final verdict: buy small, local, and lightweight items in Korea.