I wish Fujiya was closer to me now that I'm no longer a student at ASU. The best bento boxes and rice balls (onigiri). Plus they have my favorite brand of milk tea (kirin), it's not cheap, but what Japanese thing is? Totally worth it by the way. Everyone should go and try it.
Don't expect this place to carry everything you'd want (it's pretty small), but it has most of the basics and even some things that other places don't carry.