KyoKyo: Do you live near a Uwajimaya or an asian store in general? You could get red bean paste and sweet rice flour and make some mochi. Though Ramen might be the easiest option.
I also know that a lot of stores, not just asian ones, have this particular brand of packaged curry/curry mix called "Golden Curry" which is Japanese, I see it in a lot of supermarkets actually. It's really easy to make. You could make Kare Raisu, which is pretty much just that curry and a side of rice.
There are also some stores that have a box of tempura "mix" which usually isn't too hard to find.
I suppose for worst case scenario that nothing works and you can't find a good way to package up anything, you could just get some Japanese candy or something, I know some supermarkets have pocky and botan rice candy.