I don't know what country you're coming from/going back to, but some don't allow foreign foods to be brought along. Wouldn't want an ordeal with customs. You might wanna check that out before smuggling the nuts XD
As for NYC, I've never been, so I have no suggestions. Sorreh.
The UK. I know we're allowed to bring pretty much anything back from the EU that isn't kicking or screaming, but the US might be different. I'll try and find out.
It's an ecohazard thing.
All the countries are worried of another Rabbits in Australia story, with some other planot or animal as a culprit. You don't have this issue UK-EU because it's the same general ecology.
All I know from personal experience is we couldn't take food off the cruiseship in Mexico, and couldn't bring any back on, either. We got blessed out for having a banana in the backpack. =/
I figured its a similar thing between all countries. None want the others' cooties.
My mom did something that fucked up the computer screen. Whenever I move my mouse, the screen shifts. Including the toolbar, the desktop, etc... It's really annoying. >.<'