Great Idea Divya, an application to keep all your doodles together, compare or share. I always doodle or different pieces of paper which I always lose, so your doodle application concept will be great for me to use. Well Done!
Same as Charlotte as a child I grew up to comics and superhero cartoon series, they were a big inspiration to us and now to the young children of today. Maybe your concept could include an activity in creating superhero gadgets that can teach them about technology, physics, chemistry, crafting etc.. as sketches or prototypes.