Wooden boards with wallpaper, take sandpaper to it, I would love this on any wood project. Table, bench, chair, picture frames, maybe even a floor that you would satin varnish over. So many possibilities. Love this!
Vinegar works as a wood stain when you add a metal object in the mix and let it sit in a glass container for a week. A handful of pennies will produce a beautiful pale Caribbean blue stain. A wad of steel wool will give you a rich reddish hue. A combination of tea and a metal object in vinegar will produce a black stain.