I recently discovered Polyvore.com and I am completely smitten! It is soo much fun for a design geek like me. I am using it to make mood boards of rooms that I am working on. Here is a sample with items from my living room. I don't have the rug or curtains yet, but this gives me a good idea of what the finished product will look like.
Here is an idea of my bedroom... still needs paint and headboard in real life!