On this board awhile back there was a gal who found a link to some chair rollers. What it is basically is that you buy 4 - 3 wheel rollers, I got mine at Harbor Freight, tennis balls, that you make an X on & slit to close to the bottom so you can get your chair leg in, & a bolt to go through the tennis ball. My uncle made mine & it gave me the extra height, since I'm vertically challenged, & also made a regular chair into a rolling one. I still did use a pillow pad to sit on but it worked without too. Needless to say, everyone at the last quilt retreat was checking it out. I'll try & find the pictures of it that were online & post them. I think I also googled how to make chair rollers.