Hi again
I do crystal readings, in many forms. I use a variety of cloth and silk throws, some have markings on some don't, as well as some mirrors and hardbacked layout zones that I make myself. The most popular ones seem to have the 12 astrological houses in them or different points, like a compass or crystal bagua. If you are going to laminate the sheets then I would go for a colourful paint, that isn't too thick, or you can cut the sheet to slightly smaller than A4 so that the laminate sheets still have a good closure round all sides (depending on what size you use of course) Using glitter and glue also looks really nice as does using leaves and feathers then laminating

It all depends on which powers and energies you are drawing on, Native American ones love the four winds, animals, totems and feathers, Egyptian ones love showing the different gods and goddesses as well as symbols like the ankh and lotus.
There are lots of ways of interpreting the fall of the stones too depending on the influences you choose.