Children’s Cartoon ideas?

You should come up with your own ideas or hire a writer.

If you want to run a business sharing ideasa over the internet can lead to copyright issues

maybe you should ask for inspiration -

for inspiration you can go on tumblr or flickr and search for pictures using words that interest you (e.g flowers, italy, motorcyles) use the pictures to inspire you then create a character/setting around that. 

I keep all my own ideas, as you should too.