Alphabet games:
https://learnenglishkids.britishcouncil.org/category/topics/alphabet
More alphabet games:
https://www.education.com/games/alphabet/
Word games:
http://www.wordgametime.com/grade/kindergarten
Disney games:
http://disneyjunior.disney.com.au/games
Songs for children:
https://www.youtube.com/user/SuperSimpleSongs
Intermediate/ Upper intermediate levels:
Word games:
http://www.wordgametime.com/grade/all-ages
A series of videos for beginners with comprehension activities
Listening practice
Reading practice
https://www.youtube.com/channel
Read the news and choose the language level
Fairy tales in video
Songs for children
Surprise link: 10 amazing virtual museum tours
For more advanced learners: