My sister is studying abroad in third-world country, and mailing her a Christmas gift would be prohibitively expensive. I'd like to get her something anyways, but it'd have to be web-only. Here are the parameters:
She gets internet access at cafes using her laptop (a Mac). Internet access there is meh--imagine a slower, sometimes unreliable DSL line. She uses her computer for keeping in touch with friends and family, reading the news, and occasionally creating documents.
An iTunes gift card seems obvious, but I'm hoping I can draw on your collective intelligence for a better idea.
My budget is ~$25, but if the whole family chips in, anything up to about $200 would be doable.
Edited to add: it may help to know that she's very smart, moderately tech-savvy, and loves to read.