Yet another MUJI fanatic here. The San Francisco store gets my recurrent patronage.

I would also recommend their furniture - I have a very comfortable bed and floor chair from there, and their recliner seat is terribly comfortable (but sadly I do not have the space for it in my tiny SF bedroom)

The only downside is that after you've been shopping to MUJI in Japan, you realize that you do pay a premium in the US. Oh well, worth it.