I found an old typewriter table at a thrift shop that I used for my sewing machine in the dining/living room. It was very inexpensive, probably about $5 or so. Some of the things I liked about it were the fold out sides and the wheels and fit nicely into a corner when I wasn't using it. It was also pretty stable. But it was pretty small so only good for piecing.
You might want to check out a thrift store and see what they have.