All you need is some wood plaques, paint, wooden letters, and some hooks from the hardware store. This is what the wooden plaques looked like when I got them at Michaels. You can do any size or shape that you would like. I chose the rectangle and square to go with the shelves I bought for the other side of the bathroom.
The plaques might need a bit of sanding if there are any rough edges. Then choose what color you would like to paint them. It took me 2 coats of paint to cover these. This is after my first coat. I chose black once again to match the shelves, so you can choose what color will work best for you.
Here are my plaques finished with two coats. Then I bought some letters to stand for my kids and painted them in blue since that is one of my accent colors in the bathroom. I bought these wood letters at Michaels also, and they have a variety of style of letters you can pick from depending on what you like best.
I then attached the hooks to each plaque and hot glued the letters to the top of the plaques.