Almost anything around you is a network — even recipes and their ingredients. All you need is to start seeing their nodes and edges!
Dmitry Zinoviev @aqsaqal talks about seeing the world through the lens of data science in this article:
https://medium.com/pragmatic-programmers/network-science-of-american-home-food-457513280555
Bonus: This really is my grandmother’s one bowl brownie recipe used as one of the images in the article:
Dmitry’s books:
Complex Network Analysis in Python (PragProg)