Such a great story! 😍
"Fold paper. Insert lens. This $2 microscope changes how kids see the world"
https://www.npr.org/sections/goats-and-soda/2024/11/24/g-s1-35181/microscope-lens-students-foldscope
"Once assembled the Foldscope is the size of a bookmark. It’s small enough to fit in a pocket and can magnify up to 140 times.
Each unit costs around $2 to make. Foldscopes are offered for free to kids in lower income countries; various upgraded models with extras are sold as well, earning money for the charitable endeavor."