It's pretty easy to do. Get yourself a small piece of acrylic from HD/Lowes. You will also need a butane torch (sold at HD/Lowes) or similar. Depending on how you want the tablet to sit. You can use a small piece of wood, aluminium, metal, etc, to form the base (and top), apply the torch to the acrylic to the area you want to form (to slow will melt or will bubble, too fast will just take you longer to heat up the arylic). You might want to heat up both sides, so that it soften up evenly. Once its soft, you can mold it to the width of tablet. Remember to use gloves, Acrylic get hot and will have lasting feeling on your fingers. Believe me its not a pleasant feeling. You can mold the top to hold the tablet in place or use Velcro. Youtube/google will help get you an idea.
Try it out on a small piece of acrylic 1st to get you an idea of what you need to do. But its fairly simple. Bending acrylic is a lot nicer then cutting and gluing, especially with a small project. anything under 1/4" is manageable. GL