How do you incorporate room walls into Strength workouts?

Some of the new strength workouts involve using a wall. With being sweaty, and down on the floor a lot, I would rather not get sweat and dirt marks all over the walls where I exercise (a bedroom). Has anyone incorporated “wall protection” into their sweat caves, or have a recommendation on something temporary to prevent marks and wall scum? Doorways don’t seem quite perfect for this based on width, but handling the trim there would be preferable to painted surfaces.

@jtroll I generally am in the basement so it isn’t an issue but perhaps try using a towel.

Washable paint!