Hey Arnold Spin-Off 'The Patakis' Series Bible Leaks Online
 

Not contemporary or anything, but many years ago Craig Bartlett was trying to get a Nick-At-Nite exclusive spin-off for Hey Arnold going which focused on an older Helga Pataki and her family. The series bible has now leaked online (along with the fourth season bible for Hey Arnold)

https://archive.org/details/HeyArnol...ge/n2/mode/1up