Roughly 40 years ago we had a sewing center made. Part of it is a box on swiveling wheels, complete with a comfy rectangular pillow on the top. The "box" has a hinged top and lots of room inside. It rolls around my uncarpeted sewing room (watch for threads and tiny bits if fabric in the wheels) and fits into the knee holes at the sewing stations. Every once in a while I make a "slipcover" for the pillow.
If anyone decides to have something like this made or to upgrade a table, desk, etc., consider a formica top for it. Mine was slightly textured and the ensuing 40 odd years haveworn the texture off where I touch it while sewing. BUT, there are no scratches, potential fabric stains, water marks, etc. We will not discuss what I have done to the finish and needle plates on my machines. Oops, digression. Regression? Sorry.
Pat