You have come a long way and learnt a great deal of new concepts. You, my friend, deserve a high 5 for all that you have accomplished!
Since you are no ordinary person, you deserve not just any ordinary high 5, but one that the Arduino itself will give!
This brings us to our next new project, a High-5-ing Bot!
This project will use sensors that you have previously used, with new concepts of actuation using motors.