I bought the inexpensive rolling sewing table at JoAnn's a few years ago...With a great chair from Staples that I just need to raise up a bit, it is right height! I put my foot peddle on the little shelf that is inside my table - it is up off the floor a few inches so it is just the right height with my chair raised up...
Think it was $49 on sale... It has sides that you can raise up and I leave them up and have a rolling cart under each side.
One on my right side has my sewing machine supplies and other has my embroidery machine supplies...
Has been the best 50$ spent!