When you want to brainstorm new content ideas, you don't need to look beyond your own archives, yes, you can brainstorm new content ideas from your old posts.
Let see how to generate new content ideas from your old posts.

1. Write sequels to your old posts with relevant content
2. Spin your old ideas into dedicated new topics
3. Gather feedback from your old posts' comments to generate new content ideas
4. Create new content for the parts that are missing in your old posts