What is an easy project I can do using a BeagleBone Green & an Arduino Nano?

So I am looking to do a very simple yet, interesting project using my BeagleBone Green & an Arduino Nano. Any suggestions will help me out.

Thanks

Any suggestions will help me out.

What you mean by "simple" is undefined. What you mean by "interesting" is undefined. What you mean by "BeagleBone Green" is undefined.

When you define these terms better, maybe we can make some proposals.

Looking at your other post, I see you're reading temperature and humidity data. How about sending that information to your beagle bone and have it serve up a web page with graphs showing it over time.