I made my sewing/cutting tables from two hollow core doors I got from my sister. Made them 'L' shaped, attached with brackets, bought two sets of folding table legs and now I have a huge play area in my average size bedroom with lots of space left.
Don't know why you can't go to HD or Lowes and get one for an ironing board. You can get the silver material (what's it called?) at joanns also.
Good luck!