"I once worked with a candidate at Google for a product manager role. During the interview, he started talking about how he kept chickens at his house. He was extremely passionate about building a door for the coop that opened and closed automatically to control the chickens’ movements."
I have 30 tomato plants in my backyard and was planning some automation around watering. It doesn't always have to include a raspberry pi even though I may go that route to monitor soil temp in the hot months. Filling up a 5 gallon bucket with water and compost and the right size holes can slowly drip feed the plants.