Arvind Gupta is an Indian toy inventor and popularizer of science for kids. Creating simple toys out of trash and everyday goods, he illustrates principles of science and design in a memorably hands-on fashion. He works at the Children’s Science Centre in Pune, India.
Arvind has posted hundreds of designs for toys made from trash at http://www.arvindguptatoys.com/toys.html
See an equal amount of videos on his youtube channel at http://www.youtube.com/user/arvindguptatoys