Everyone, at some point, start damaging walls.
A chair bump, a scratch and all in between. I learnt how to make the surface flat again using fillers and then I tried painting carefully using the same paint but... No joy. It is always visible that some damage was there. Paint ages and it is close to impossible to match the same color.
I know that the perfect solution is paint everything again but I'm also curious about some old trick or creative solution to make the wall look nice without painting the whole room.