Top 10 ways to save money as a PhD graduate student

As most of us graduate and PhD students know, the stipend isn't exactly a gold mine. But it suffices. There are, however, ways of stretching that stipend out quite a bit so that you can enjoy some things in life more? Here are my top 10 suggestions.

1. Travel: When you travel, couch surf. Its the way to go. You'll save on hotels, and plus if you're traveling abroad, you'll stay with people who may be willing to show you around. What can be better than touring a new place with an expert?
2. Groceries: Start couponing! It sounds like hard work but it is so easy. I don't understand why everyone doesn't do it. You can save 50% or more on everyday groceries. Just get the local or regional newspaper every Sunday, and keep the "Smart Source" and "Red Plum" inserts. Then go to one of the many couponing websites that already match the coupons you have to the grocery stores in your area like Coupon Mom, Generous Savings and Living Rich With Coupons. Don't believe the show "Extreme Couponing"; you don't need a lot of space to store the free or extremely cheap stuff.
3. Commute: Skip the car, bike to work. Or take the campus bus. But try and avoid your own car as much as possible. Besides, its healthier too.