The folks at Grand Illusions do demonstrate some of the most unique toys around. String Ray happens to be an optical toy that you can play with for quite a while. It brings a trippy light show to your home. The toy has 3 electric motor, two of which are responsible for making the string revolve. The third motor drives the color wheel.
You can change the speed of the string and control the colors. If you feel too lazy, just press the automatic button to get a nice light show. This is one fun toy, don’t you agree?