Ask HN: Is something from your startup a good gift for a CS student?

So, I've been taking CS classes and tutoring at a local community college in the SF Bay Area. As part of the end of the tutor program, we are doing a white elephant thing, 10 dollar max.

Rather then just buy something from fry's or ThinkGeek, I think it would be cool to potentially give them a subscription to a cool web app or two for a year, or a purchase something that would be of interest/be of help/have a geeky appeal to a CS student.

So please, pitch me your product.