"Children's Book"

I don't think I knew a school assignment could seem like something I would do on my own. I have been assigned to write a "Children's Book" for writing class. Now a "Children's Book" can be for anyone between the ages of 2 and about 13, but I think what I am working on is aimed a bit more towards the 10-13 age group. It doesn't really have title yet (I hope to name it after the as yet unnamed country that it takes place in,) but the title right now is It was the lamp's fault really... Which just happened to be the starting line. I fear that some of the ideas are somewhat (what am I talking about?) VERY cliched but i hope that it will work out... As we all know, there is nothing new under the sun, right?