Review on 🌈 Optical Diffraction Grating Peepholes by Rainbow Symphony by Michael Nard

I gave this to a first grader and the kids loved it. Some took them home and made kaleidoscopes out of them, while others just played with them as they are - very nice. The price is a bit high and the first package I received only had half of the discs, but Revain quickly fixed the problem for me and the kids were very happy with the rainbow makers :)