MUJI

They have online store,too.
if you guys want to find modern and simple items, visit there :))

MUJI Times Square
The New York Times Building 620 8th Avenue (40th st.)New York, NY 10018
Tel 212.382.2300
Monday - Saturday11 a.m. - 9 p.m.Sunday11 a.m. - 8 p.m.

MUJI ChelseaMid-Season Sale
16 W 19th Street (Between 5th and 6th Avenue)New York, NY 10011
Tel 212.414.9024
Monday - Saturday11 a.m. - 8 p.m.Sunday11 a.m. - 6:30 p.m

MUJI SOHO
455 Broadway (Between Grand and Howard Streets)New York, NY 10013
Tel 212.334.2002
Monday - Saturday11 a.m. - 9 p.m.
Sunday11 a.m. - 8 p.m.

MUJI to GOJFK International Airport
Terminal 5 John. F. Kennedy
International Airport
Tel 718.917.8989
Monday - Sunday5 a.m. - 10:30 p.m.

http://www.muji.us/store/ (online store)
a wide variety of stationery, household items, furniture and apparel while a limited number of items are currently offered through online store.