You might want to look into fabric production. One of the oldest automated industries. Spining/weaving/sewing. Do you know what a Jenny and a mule is? How does a shuttle work? Can you implement a PLC that can knot broken threads inside a loom or a sewing machine?
While all this was done as much as 250 years ago. Can it be improved whith what you are currently learning?
Drones are, in essence, flying autonomous vehicles. Pros and cons surrounding drones today might well foreshadow the debate over the development of self-driving cars. In the context of a strongly regulated aviation industry, "self-flying" drones pose a fresh challenge. How safe is it to fly drones in different environments? Should drones be required for visual line of sight – as are piloted airplanes? Join EE Times' Junko Yoshida as she moderates a panel of drone experts.