This is a classic of magic that creates a "Wow" response from the audience.  Show a coloring book and flip through the pages to show the pictures.  Add magic words, wave of the wand, or whatever silly thing you do to create the magic and the book is now full of colored pages.  The gasps from the audience is amazing.  Now you can magically erase all the color and drawing and start again.  You are totally in control of the book so it can be blank, drawings, or color at any time.  Great for kids and makes a great visual example for gospel performers as well.  Very easy to perform and perfect for beginner magicians.