#11 Mobile to mobile charging

Ravi Duhan, Sanjay Raghav and Manoj Kumar

Class 9, SD SSS, Rewari, Haryana

The group of three friends had files shared between mobiles through Bluetooth and extending this further they thought why not a mobile can be used to charge another mobile?

Then they came up with possibility of doing it in two ways -- wired or wireless way of charge transfer from one mobile to another.

#10 Retractable toilet pot with cleaning system

Shweta Verma

Class 9, Gyan Sthali Public School, Jhansi, Uttar Pradesh

Retractable toilet fitted with sensors -- the pot can be pulled inside the wall after use and taken out when needed.

Shweta believes, "This will help people who have small homes with little space. It can also be used in other places where space is a constraint."

#9 Modified painting brush

Ektapreet Kaur

Class 9, Police DAV School, Jalandhar, Punjab

Ektapreet in her arts classes observed how different paintbrushes were required for different kinds of strokes and paintings.

"What a waste of money and how tiring to keep alternating from one brush to the other!" she thought.

This inspired her to think of a single paintbrush, which could accommodate varying sizes, just like a pen can have refills of many colours.