First of all, I think it's really great you are doing this ;) One option is that I believe you can get relatively inexpensive Android devices in India. And the

First of all, I think it's really great you are doing this ;) One option is that I believe you can get relatively inexpensive Android devices in India. And there are now environments such as Grasshopper and SoloLearn that allow you to develop in Java right on the mobile device! I can also recommend CS Unplugged: "a collection of free teaching material that teaches Computer Science through engaging games and puzzles that use cards, string, crayons and lots of running around" https://csunplugged.org/en/ https://csunplugged.org/en/