My wife loves the idea of removing our stair carpet and putting bold/bright wallpaper on the vertical faces (risers)...
...but we're concerned that the horizontal parts (treads) would be much more slippery as plain wood, compared to carpet. With a 4yr old in the house, and my wife being so accident-prone, I think we need some sort of anti-slip.
I am not sure if it is possible to cover every single tread with a seperate piece of carpet. It might be difficult to secure the outer edge under the lip.
Perhaps paint each step, and sprinkle on sand/sugar whilst still wet? This would leave a textured surface, quite rough.
Perhaps glue thin strips of rubber along each tread?