Myeongdong has two Daiso stores: Myeongdong Station Store (134-1 Toegye-ro) and

Main Store (43 Myeongdong-gil), both 10 AM–10 PM. The station store is close to the subway, so you can stop by right away. You'll take out your passport a lot too, so the ₩1,000 clear passport case 2-pack (5,100 orders) helps, including at tax refund counters.