A fun project could be to quantify how much less pepperoni toppings, NY pizzerias have been putting on pizza. Train a CV model to detect what a slice is, what a pepperoni topping is. Then feed it public pictures of NY pizza over the past 10 years. An interesting result would be something like "NY pizzerias have been putting 16% less pepperoni on pizza". This would totally get news traffic and generate some buzz, and be a practical example of non-price inflation.