I've heard about it, I've seen ideas, and just had to try it.
I was given some spray starch and thought, what will I do with this? (long story)
Then I remembered hearing something about spraying fabric onto walls like wallpaper but it comes off easily and without any fuss.
(Full disclosure, I haven't tried taking anything off yet)
So I printed the letter "R" in a giant font, cut it out, traced it onto fabric, cut that out, and sprayed it!
Slap, smooth, swipe, done!
This may be a dangerous habit until the spray starch runs out.