What tools do you use for Content Ideation?

The big AI tools like ChatGPT and Claude can be helpful for expanding and iterating on ideas (ditto for SEO research tools and keyword finders) but for me, real genuine content ideation is best done by a person or team who's an expert on the given topic. What I usually do with my teams is keep a running list in a repository in Asana or Notion or even a Google Doc and when building out a content calender revisit the list to find inspiration. Another good source to add to the list is being obsessed with reading user reviews and things like comments on social media. This is a great way to find common questions that can be answered in the form of content.