Drill a hole through a vertical wooden paper towel holder using a drill with a 1/4-inch drill bit. Position the hole horizontally 3 inches below the top end of the holder.
Repeat this process with a second vertical wooden paper towel holder.
Insert a 3-inch-long screw with a 2-inch-long shank into each holder.
Drill the end of one of the screw into the side of a 8-inch wide, 10-inch long wood-framed mirror. Select a mirror whose wood frame creates a 2-inch perimeter around the mirror so that the wood can be drilled into effectively. Position the end of the screw 3 inches below the top edge of the mirror.
Drill the end of the other screw into the other side of the wood-framed mirror. Position the end of the screw 3 inches below the top edge of the mirror, as before.
Paint the wooden paper towel holders and wooden frame using latex paint to decorate it as you prefer. Allow the paint to dry for 6 to 8 hours.
Place the vanity onto a countertop for use. The mirror will be suspended above the countertop; you can adjust its angle as you require.