Some kids like to hold the mouse tightly. However, like hitting keyboard keys too hard, it is not a good idea. Computer mice may be too big for little kid hands. You might try looking for a smaller mouse or use a trackball that does not need to be held, and you can also use several fingers at once to move the ball. Wrist rests can be helpful here as well.
Many mouse pads come with built-in wrist rests to help keep straight wrists.
Vision The Window to Your Computer Besides your keyboard and mouse, there is also the computer monitor that you need to keep an eye on. Left, Right, High, Low . By having the monitor off to the side or too high or low, you can end up being a real headache . . . not to mention that the neck and shoulders will surely hurt as well. Remember that where the eyes go, the body follows. If you have to look to the side, up, or down, then your head and neck turn as well.