And also: which tools (or abilities) are you lacking for a better teaching (and learning) experience ?
You should checkout Teaching Python Podcast run by two teachers teaching Python to middle school kids. https://www.teachingpython.fm/episodes
I think codesandbox is quite good. I always find that one on ones are the best way to enhance the learning experience.
I have been a teacher, tutor, and head of school clubs, as well as director of education for makerspaces.
The tools to focus on are THE FUNDAMENTALS. The fundamentals start with the framing - that means talking about Software Freedoms and our relationship with technology and society.
Then once the foundations are in place, the Free Tech starts to matter. Linux, Firefox, Devtools + html/js, Scratch etc.
Be sure you're clear on what your own goals are. Are you an entertainer, or an educator?
Not a teacher, but its always good to start kids young on vim: https://vim-adventures.com/
I would focus on web technologies. Getting something on the screen with html and css is trivial, and JavaScript is very powerful.
Best of all, every computer has a built in JavaScript runtime (web browser). This makes it easy to share what you build with friends and family.
As a "coding" teacher I would stop teaching how to "code" and start teaching how to think and solve problems.
I'm not a teacher, but I heard good things about replit https://replit.com/teams-for-education