Time Out says
A department store located at Banglumphu, Tang Hua Seng is a one-stop shop for craft and DIY projects. Different zones sell various kinds of fabric, rope and thread including imported goods from the Japan, the origin of cute crafts. (It actually feels like a microcosm of Sampeng Market). Tang Hua Seng is perfect for those who want to make their own dresses or go full-on DIY with their gifts.
Bang Bamru, Bang Phlat,