Here is a photo of my Quantum ORD Bot in progress. Since I'm still waiting on my heated build platforms, I had to make due with what I could find laying around the lab.
I used the cover of a CD holder and used painters' tape to both secure it to the movable plate and cover the work area. It's just the right size for the Quantum. The reddish-orange part is a lead-bending jig used to bolster the sag in the center of the work area. It happened to be just the right height.
Also note my low-cost filament spool holder.
The extruder body is positioned in an unorthodox configuration because I'm clearing a jam in the hot end (Arcol.hu 4.1.1 - latest and greatest).