A while ago I started a Reddit community dedicated to educational GIFs that implement the idea of microlearning or "knowledge snacks" - bite-sized pieces of educational conent that is easy to digest, post and share everywhere. However, did not have time to properly promote it at the moment.
Now I have an idea of "99 knowledge nuggets" marathon, during which I will create 99 educational GIFs on my own to provide some initial content for the community.
I am researching ideas, but the area is too vague... So I decided to ask for your help to identify 99 educational micro-content ideas that are interesting to a common curious person and could be fit in up to 5 slides. I think it should cover different areas of knowledge - not only math/physics, but also history, art, music and popular culture. I'd greatly appreciate your ideas! Thank you in advance.