The chandelier pictured below is made from clothes hangers found in Macy's dumpsters (actually, I asked a stock person if he could save me some of the hundreds of hangers thrown away monthly). They are connected to a discarded bicycle rim.
All I did to make this chandelier was drill two holes in each hanger--one toward the top and another toward the bottom, then attach each hanger to the bicycle rim with wire, and tie the other end of all the hangers together at the top. So simple!
You can see a video of the making of this hanger chandelier by clicking on the link.
The fun thing about using hangers is that you can do all kinds of variations of hanger positions to achieve different and spectacular results. And your cost is almost zero.
So, my advice for home decor this holiday season? Get thee to a dumpster!