In Gangnam: Daiso Gangnam Station No.2 (109 Teheran-ro) and Gangnam Station (422 Gangnam-daero), both near Gangnam Station, 10am–10pm. The Cap Magic black markers (3) are ₩2,000 with 3,504 orders, good for boxes and labels, handy for moving or parcels. Stationery is not a liquid, so it is fine in your carry-on.
