Advice on what to purchase in US & ship for move (Seoul)

Hi! I'll be moving to Seoul in July. I've been reading blogs on what to ship vs purchase in Korea. It's become clear that towels are a must ship and I've been told sheets and a comforter as well.

What is YOUR advice? What did you regret not bringing? What did you bring and didn't need to after all?

I'm starting to purchase items for my move and dont want to waste money or be without.

Cheers!