One thing I'm doing is trying to use what I already have. For example one of the bathrooms is already done in blues but nothing on the walls and pretty boring. So that everything we already have can still be used I decided to do a beach theme. I love the beach and rarely get to go so I figure it will be nice to have a little bit of the beach here. And since I used to go to California a lot and I enjoy the beach I already have some beached themed items I can use. I found some shells we had around, a dolphin candle (that is gel so would never burn it but it's cute), and my husband has a sign that has a shark on it. I never knew where we could put the sign so the bathroom theme is perfect. I will need to buy somethings but not a lot since I already have a number of things around the house.
I also used to oil paint so I have a fair amount of paints that I will use for some of our art work. I'm also making some more myself. I plan to try and get back to painting watercolors and honestly the cost of artwork is pushing me even more to start. I also enjoy photography so I plan to use some of my own photos as well.
Etsy is another resource I will use a lot. I love supporting real people and it's also a great place for vintage pieces as well as unique, eco-friendly decor. I already ordered a sign for the kitchen that says "When Life Gives You Lemons, Add Vodka." Because it was handmade I was able to get it made to match the kitchen, can't do that at Walmart!
I also plan to check out the local Goodwill to see if I can score any good used items. By doing all of this I should be able to give the house a new look without spending much money and in a very green manner. I would love to hear your tips on this subject as well! Be sure to post links to good places to get eco-friendly decor as well.