ICT-REV Inventory (nearly 200 tools and resources which are either free or have a good free version)
Copyright free images, sound files: https://pixabay.com/
Copyright free images: https://unsplash.com/
Ted Ed: https://ed.ted.com/
Drawize https://drawize.com/play Pictionary meets the internet. Ideal for online groups, or one-to-one lessons as well.
Another search engine (alternative to Google) safe for younger learners: https://www.qwantjunior.com