Do you have study cases about micro:bit?

Recently, I am studying micro:bit programming. I have practiced all of micro:bit study cases with Elecfreaks Starter kit. But I want to find more idea to complete more difficult and complexed projects. Right now I am just lack of good ideas and I would like to know more funny tutorial cases. Besides, I would like to help my teacher to edit these cases and show it to more students. Is there anyone who have relative resources?