We have an eclectic collection of art throughout our house. A friend of ours painted a few abstract pieces for us that hang in our living room and daughter's room, another friend gave us a piece she bought in Japan. We purchased some art photos for our bedroom (here on Etsy!), and I painted a watercolor duckie that hangs in our bathroom. Our son has hung his own drawings on the walls in his room, so we didn't need to decorate in there. Most of our pieces are pretty small (roughly 8"x10"), but much larger ones hang in the living room- the largest is about 2'x4'.
We would be likely to buy a piece if we found something we liked, but our funds are pretty limited these days. We prefer asian/oriental style art or abstracts.