One of my favorite things to poke around in is the DWELL Magazine on-line. Recently they did an article asking interior designers to give their ideas on what the average jo of limited means could do to spruce up a room –with a $100 budget.
WELL this led to a great find for me! Interior designer Betsy Burnham Stern gave this fab website, 20×200.com. I am quoting Betsy here from the Dwell article:
You can buy prints by up-and-coming artists for $20 for 8x10s and $50 for 10x14s. You’ll be supporting new talent, adding to (or starting) your art collection, and spending so little you’ll have enough left over to buy a simple gallery frame from West Elm or Pottery Barn.
http://www.dwell.com/products/collections/five-easy-pieces.html#ixzz0mazk3Jek
There is so much stuff out there to make your space unusual and “you”. Maybe you want to start here.