Transportgal, You might want to see if you can find a hospital bed tray table. If you could find and older, heavier one I'm pretty sure it would work with your lightweight sewing machine. I have a very old one that I use next to my sewing machine for various uses(not actually sewing on). It would allow you to possibly position it to one side of where you are sitting so it is in front of you and adjust the height so you could sit and sew easily.