12-inch Slim Star Novascope by David Sugich -- Gadgetify
In the past few years, we have covered plenty of amazing kaleidoscopes that create trippy images. The Otona no Kagaku Kaleidoscope Projector is also worth a look. It is a DIY kit that projects kaleidoscopic images on your wall or ceiling. It has interchangeable lenses and 2 empty tubes for making your own kaleidoscopes. It has a projection distance of 10cm to 2m.
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You can power this projector with 2 x AA batteries.
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