These websites have been helpful to me, especially when primary/elementary supply teaching.
Resource websites
ICT Games A variety of games covering different subjects can be found here.
Twinkl (My go to site for supply teaching when there are no resources or anything left at all!)
Oxford Owl A range of books that can be read online.
GPic There are so many great fiction and non-fiction books for the interactive whiteboard.
https://www.science-sparks.com/
https://www.bbc.co.uk/bitesize
TES There are a lot of resources if you use the search. You need to register to download. Some are free and some are paid.
https://whiteroseeducation.com/
Phonics Play The children enjoy many of these games.
https://www.phonicsplay.co.uk/
Primary Resources A variety of resources covering all the primary age range as well as EAL and some SEN resources.
AI
https://teacherai.netlify.app/
I especially like the Email Genie on the above AI site.