The toy can be found here.
This is what the interface of the kaleidoscope looks like:
The left features a blank disc with a constantly spinning wedge. Under the circle are a collective of small pieces that can be dragged upwards and positioned wherever the user wants.
The way this is then rendered into the image on the right is that every frame that ticks by, the spinning wedge's current contents are put into the main circle, and mirrored alternatively as they go around to create a somewhat seamless moving image.
As you can see here, the wedge currently sits over a yellow circle, blue diamond, and parts of a yellow & orange line.
I have manually highlighted in pink where this wedge corresponds in the main kaleidoscope.
It is, or course, mirrored.
There is a link on the page to yet another kaleidoscope, which can be found here. It is used in the same way, but is somewhat intensive on the computer, as the selected parts are painted onto the circle, can move & be coloured manually. There are also speed options, transparency options, as well as a host of added features.
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