I'm testing what can be done on acrylic paint paper without acrylic paints. Conclusion: you can do a lot. I do not recommend playing with watercolors, because the paint is absorbed completely out of control. I do not mind this lack of control, but it is difficult to paint something precisely. It is nice to sketch with coal and markers. The structure is a bit like a canvas.
At the weekend I bought some new crayons, pens, coal.
I'll have fun.