List of canvas or tool diagrams [Link]

https://www.canvasgeneration.com/

Just In Mind blog has concise UX topics

https://www.justinmind.com/blog/

UX tools includes challenges and surveys

https://uxtools.co/challenges/

Design Principles FTW is database of design principles from various companies

https://www.designprinciplesftw.com/

Maze ultimate guide to UX research

https://maze.co/guides/ux-research/

33 UX Activities

https://uxtools.co/blog/33-activity-ideas-for-remote-ux-workshops/