What skills to learn this winter - 7 years old

[Mart987]

What can your 7 years old learn on his own while you work from home?
Touch typing - Will he actually learn?
A new language - French/how will he do it on his own?
Any other ideas, I can't sit by him the whole time

Runic cube!

*rubix

Although I did teach myself to write in runes when I was a kid!

Thank you all.
In the end I went for dance mat typing and French. Touch typing did the trick and he does it every day for about 15 minutes. French didn't go as planned so I decided instead to let him watch something on the ipad on the condition that it has to be in French. Since he wasn't allowed screen time during the school hours he didn't resist much and he has done it for about a week or two, mainly cartoons. Not sure if this will lead to some improvement in French or not, I will keep you posted. Coding seems interesting and many of the other ideas too. Will see where we are in a few months time.
Thank you all once again.