This seems an odd place to post this, but this is where Google says
this is discussed most.

I think the ideal computer desk design is a drafting board. A 3-foot
wide by 2-foot deep flat inclined surface that you can draw on. This
is just about possible today. You need two projectors, one on each
side, projecting the screen onto the 3'x2' surface. That makes it
harder for your hand to block any part of the display. You need
something to sense the position of the pen. A cordless keyboard
probably helps too. Other than that, it's just a normal drafting
setup.