Try this site
http://frugalliving.about.com/ there is a lot of great ideas on there.
Since moving here, we have become very aware that we are living in an area of New Zealand that is of very high conservation value and although I have alsways been interested in the environment, I have changed a lot of my habits. It has two benefits, - less rubbish and it costs less.
I used to buy seed trays and plant pots, now I cut milk containers in half for plant pots and cut the large juice bottles in half from top to bottom to create seed trays. Saves a fortune and reduces our waste.