I have built one you might say. I bought a mini GM screen last year at Gencon, that has clear plastic overlays or sheets, that might not be the right term, but you can slide what you need in the 'sheets'. On one side I have found vaious MB pics from the web and shrank them to fit, and on the inside I have various quick reference sheets shrank to fit as well. Will find out how well it works and if there's anythingI have forgot to include during Gencon. But I guess to answer your question, nothing other than personal use.