Thought you might want to see an antique stitching pony that I use for sewing. I found it in an antique store about 25 years ago. from the bottom it was obviously originally a stitching horse. But that is okay, I sit the screw on my knees and it is the perfect height for sewing whether I am in a folding chair or a lounger. It has a 12" throat so I can sew about anything in it and the screw will tighten to whatever pressure you need.