Children can turn either the horizontal or vertical knobs to watch lines begin to form on this "magic" screen. When finished, they can simply shake it to watch the picture magically disappear so they can start all over again!
  — As of 8.16.10, this product had 4 out of 5 stars from 4 reviews on ToysRUs.com and was listed No. 38 in best-selling toys and games. PROS: Long-lasting; comfortable grip.