Cutting your own hair is something that can reduce your living expenses. The problem with this is that if you don't like buzz cuts, it might not be worth the hassle. If however, you like buzz cuts, this might be alright. (
Self Haircuts Thread )
Another thing is to really really keep track of all of the money you spend (on everything! Don't let cheat yourself by not recording the small things like ... listing something on eBay, or buying a gumball). I started doing this starting April 1st, and I'm surprised just how much money I've been spending. A true eye opener, and the records I am now keeping may be useful in the future.