Microsoft PowerToys - like a Swiss Army knife for Windows (see some cool ways to use it here)
Apps for Education - collection of educational apps in one place
Google Sites - create your own website for free
Text-based AI Chatbot (ask almost any question)
Converting files
PDF tools
Image tools
Free Stock Photos, Royalty Free Stock Images & Copyright Free Pictures · Pexels
Cleanup.pictures - Remove objects, people, text and defects from any picture for free
Video tools
Links tools
Data tools
Resoures/Other tools
Mr Long Teacher Tips - YouTube channel with video tips for teachers ranging from beginner to advanced.
Matthew Hains Online - filled with ideas and resources to help you make classes more engaging.