My hubby made me one out of plexiglass from Lowe's or Home Depot - I drew a diagram around the part for the cut-out for the machine - fortunately my Pfaff and Brother are really close in size, it ended up fitting both. For a drawer, I just slid a fairly wide plastic "stackable" type drawer under it for seam ripper, small metal ruler, marking pens, etc. I do like that reference to the fully adjustable one (Sew Mates) - it is definitely an idea.
Marysewfun