I bought three 6' x2' tables at Office Depot for $30 a piece. I measured the height I wanted before I shopped and these were perfect. I use each one for a different machine, sewing, serger, embroidery etc.
Then I bought three drawer plastic cabinets from WM to fit under the tables to hold additional parts (which I'm always misplacing), pieces for the current project and and info dealing with that machine I want to keep from magazines or the internet that I can never find when I want it.