Bogen Autopole system is a great system for your home studio. They are available with extensions to handle cathedral ceilings. You can make a wedge out of small piece of 2x4 to handle sloped ceilings. They can also be bought with stands to make them more steady. You can add sections of three background holders. (black, white, gray). I also attach muslin to the top holders when using a painted background. All available at Calumet. (www.calumet.com)
For portability the kit mentioned by someone in a previous post with the telescoping pole and two stands that sell for around $100. are great for location shooting.
I recently got a flyer from Knowledge Backgrounds, selling muslin rejects and seconds and some were very inexpensive. 10x20 for $65.00. This is an economical way to start. (www.handpaintedbackgrounds.com)