One day, I woke up and wanted one of my hallway's walls to be a brick wall. I live in an old apartment building, which is made out of bricks, but I noticed on other walls, that they must have used low quality bricks in the inside walls, so removing the plaster could lead to much dirt and no nice wall, so I didn't go with that option. I scouted several options like brick wallpapers (yuck!), real bricks (expensive), fake fiberglass bricks (also expensive)... but then, at the office I saw many old foam core boards (KAPA Line), I had salvaged from other projects. These boards are 5mm thick with coated paper on the front and the back. One side had a print on it and as I peeled it of, it resulted in a nice rough paper surface. So that was, what I was going with.