How something in nature came to be...story ideas?

for my latin and greek class, we have to write a story that could be told you an elementary school student about how something in nature came to be. every time i had an idea, someone else said they were using it and i really want to use my own. examples are things like why it snows, why giraffes have long necks,... show more for my latin and greek class, we have to write a story that could be told you an elementary school student about how something in nature came to be. every time i had an idea, someone else said they were using it and i really want to use my own.

examples are things like why it snows, why giraffes have long necks, those types of things.

any ideas?
thanks!
3 answers 3