I’ve got one. When estimating tasks, there’s a particular blog article I like to reference [0] and I used an LLM to summarize it into a set of project instructions.

Did it read the summary? Nope, I already know the material and have been using it for years. But it was a great way to communicate the key points to the model as part of project instructions.

[0]: https://jacobian.org/2021/may/25/my-estimation-technique/