I feel like a good example would be something that:
- meets the criterion to count as peripheral web
-
links to other sites that also meet that criterionOP's Tetris example is more of a couldesac, the only links in it go back to the core web. There's probably a reason that the video focuses so much on the personal website aspect, that's gonna be the webbier parts of the periphery.
Could've just linked to the video series's accompanying site, the links section has some better examples:
https://loveweb.neocities.org/main/