How to make a kaleidoscope

http://www.frankie.com.au/blogs/craft/frankie-exclusive-diy-colourful-kaleidoscope


http://littlebinsforlittlehands.com/how-to-make-a-simple-kaleidoscope-for-kids/

http://www.handmadecharlotte.com/make-cardboard-kaleidoscope/

http://www.sheknows.com/parenting/articles/1008403/diy-kaleidoscope-craft-for-kids

https://kohscience.blogspot.com/2018/08/kaleidoskop-2.html