https://openincolab.com offers a redirect to open an arbitrary notebook on the web in Colab. E.g., here's https://colab.research.google.com/github/GoogleCloudPlatform/vertex-ai-samples/blob/main/notebooks/official/model_monitoring/model_monitoring.ipynb an example notebook provided by Google.
They also provide a snippet to wrap it in a nice button: 
We could include such a button in each chapter so students can open the chapter straight in Colab and experiment with executing the embedded code.