In response to their blog post, because I can't comment on the blog (banned?): https://blogs.unity3d.com/2020/07/30/unity-hackweek-2020-in-it-together-no-matter-where-we-are Is there further information available what projects/ideas the 1,039 participants worked on? Perhaps some videos?
Ah, that time of the year where we poor peasants are shown the amazing things we could do if we could afford licensing the Unity source code for our projects.