Arvind Gupta (https://en.wikipedia.org/wiki/Arvind_Gupta https://en.wikipedia.org/wiki/Arvind_Gupta) is a well-known science educator/toy inventor who teaches S

Arvind Gupta (https://en.wikipedia.org/wiki/Arvind_Gupta https://en.wikipedia.org/wiki/Arvind_Gupta) is a well-known science educator/toy inventor who teaches Science/Technology using low-cost/trash items. His very popular TED talk titled Turning trash into toys for learning : https://www.ted.com/talks/arvind_gupta_turning_trash_into_toys_for_learning https://www.ted.com/talks/arvind_gupta_turning_trash_into_to... Videos/Photos at website : https://www.arvindguptatoys.com/ https://www.arvindguptatoys.com/ Youtube : https://www.youtube.com/@arvindguptatoys https://www.youtube.com/@arvindguptatoys These are excellent for teaching/involving kids by doing. They are also very easy on the pocket and every kid can have his/her own complete set of items needed to build their toys.