Clean each stool with sugar soap if necessary.
Lie wallpaper flat and roughly trim to a size that will cover the stool. Apply wallpaper glue (this comes in powder form – try Metylan wallpaper glue). Carefully apply wallpaper to stool and gently wipe with a sponge to remove air bubbles.
Let dry, about one hour. Using a utility knife, carefully trim edges and cut out holes. Apply a clear varnish, such as Cabot’s Crystal Clear. Allow to dry before using.