AI generated conversation between 2 philosophers goes on forever:
The Infinite Conversation

 

This database has everything:
Search the Databases | Dr. Duke's Phytochemical and Ethnobotanical Database

 

Do you enjoy taking self tests?  Look here for a broad collection (not just psych tests):
Mental Health and Personality Tests | Psychology Today

 

Bing Videos

 

Free online courses: Khan Academy | Free Online Courses, Lessons & Practice