I just want this table I'm on right now: 6' x 3' (or 2m x 1m) to
  be a touchscreen display. I'd set a "no touch zone" for my arms
  so I can lean on it...and the rest is all open. I'd probably
  keep a mechanical keyboard handy when I feel like
  hearing/feeling the tactile input but the rest? I'll just be in
  heaven.