Paint! What's wrong with paint? Easy to wash and wipe down.
I agree with Naomie, paint is cheaper and easier to clean.
You can do a faux finish to introduce multiple colors.
Here’s what we did in our bathroom with paint. Looks like expensive wallpaper! https://www.frugalfamilytimes.com/2017/11/metallic-gold-soft-green-wall-diy-paint.html
contact paper,peelnstick tiles,paint