A surprisingly good article on saving money on technology
Cost-savings, a topic near and dear to the grad students heart.

How to get more of your techno-services on the cheap

In addition to what the article suggests, I'd probably go with a pre-paid cell phone plan as opposed to a contract one. Yes, contract ones come with nicer phones, but the phones often come as cheap as $20, and tend to cost around $20 a month, as opposed to $40 + for contract phones.