This is where I might write about any primary research I have been doing. E.g., if I was going to interview someone and have written a list of questions, I would add the ‘interview schedule’ (that’s what you call the list of questions!) here. I may add comments on what I have been reading about Research Methods to evidence that also.
One thing I would NOT do, is include any raw data that has participant information on it, or anything I did not get informed consent to share. That would be unethical. I would keep that elsewhere (private) and I may write about the findings from it on this page, but I definitely would not paste it up in raw unedited form.