Thinking of new ideas

As well as my consulting and development work, and educational content such as my automated testing email course, I'd like to release something as a project people can use or a SaaS product for people to purchase.

One of my original ideas was to build a website for speakers to upload and manage their presentations, but I found Symposium.

I was building a hosted dashboard for multiple Drupal applications so people could see all their projects and available updates in one place, but someone made me aware of Drupal Remote Dashboard. Whilst it's not exactly the same, the idea is similar, so I'm thinking whether to continue with this.

I have a short list of other ideas, but if you have one, reply and let me know.