I found Anne Koschmider to have excellent use of everyday examples of contextualization. Inviting someone to see the sequel to a movie and thus needing to fill them in on what the previous movie is about, or to use photographs to create stories and then to compare them to the original , are very useable examples. I'd suggest using the Learning Network's photographs, ,https://www.nytimes.com/column/learning-whats-going-on-in-this-picture .
I plan on really giving contextualization a go.