Have a wooden built in cabinet next to vanity; need to cover it?

I am not sure what you are asking, do you mean paint or finish the wood?

Please post pics and provide more info about why you want to 'cover it'.

I'm not sure if you are talking about covering the outside. Contact paper is easy, removable, cheap, colorful and Washable. If you don't have doors, you can make "curtains" do each side, with magnets to keep it closed. Just a couple of ideas....😉

My vanity and the wooden built in cabinet have about a half inch between them. Because the sink is located so close to the wooden cabinet; the cabinet is starting to show water marks and the stain on the cabinet is fading.