NHK ES eigo videos.
Link: https://www.nhk.or.jp/school/eigo/
The NHK for schools website has some good videos centred around grammar and vocabulary introduced in ES.
The videos themselves are pretty fun for the students to watch but I recommend either using the quizzes on the website or creating a quiz based on the video to confirm their understanding.
I used some of these videos at the start of the lesson for my JHS 1st graders. The quizzes on the website are pretty long so if you are using the videos for a warm-up, I recommend creating your own quiz.
I have attached a very simple quiz I made for the "キソ英語を学んでみたら世界とつながった - What sport do you like?" video below.
Files:
Some of my schools have students with English levels far below their current grade, like high school students that only really know elementary school grammar. This looks like a great way to build up their basic English knowledge! Thanks for the recommendation.