I have to say, I am completely in love with MUJI's range of simple well thought design. Some of their products are availible through the MOMA store, others you need to find on your own
( there are several stores in NY but I am sure there are other places you can buy their products at)

Goyu Bowls

Porcelain Piggy Bank

Blackboard Globe

Tea For One

World in a Bag.

Keyring Memo Block