My Mom, who is an avid seamstress, found a Singer Featherweight at a rummage sale near our house when she was visiting and after having it refurbished (which cost more than the machine) carries it around with her in the RV. She sews curtains and bedding and decorative items out of lightweight materials. I don't think she has attempted upholstry, but maybe you can find a setting that is good for heavier fabrics (you will probably need a heavier setting to make a Playa Coat as well-my sewing machine which is full sized even had to have a lot of tweaking to get one of those started-and I still haven't succesfully completed it due to broken needles and jammed stitching!) You should be able to turn out some nice vests and leggings and maybe even a utilikilt, however. Here is a site where you can get one already refurbished and ready to go (she paid $25 at the rummage sale and $60 to get it refurbished-they are not overly inexpensive even if you do have the luck of finding one at a tag sale of some sort)
Singer Featherweight Sewing Machines
Singer Featherweight Sewing Machines