What's a nice gift for...

… a female graduate student in Russia, who gave up a day to show me around Moscow? I am in the United States.

Was there anything she mentioned in passing, like a fondness for a certain author, or cashmere sweater sets or anything maybe difficult to find there but easy to find here?

What about a career specific thing, a briefcase or stethoscope or whatever, something related to her field?

Not to be crass, but considering the situation of many in the former Soviet Union - American cash. I don’t know her situation, obviously.
If she doesn’t need the $$$, I second QT, a briefcase (maybe soft-sided?) would be wonderful.