I was thinking about that when I was dropping my 6 year old off at some hobbies earlier - it’s pretty much expected to have learned how to ride a bicycle before starting school, and it massively expands the area you can go to by yourself. When she went to school by bicycle she can easily make a detour via a shop to spend some pocket money before coming home, while by foot that’d be rather time consuming.
Quite a lot of friends from outside of Europe either can’t ride a bicycle, or were learning it as adult after moving here, though.
edit: the high number of replies mentioning “swimming” made me realize that I had that filed as a basic skill pretty much everybody has - probably due to swimming lessons being a mandatory part of school education here.
In Germany a lot of people reduced the amount of cycling they did once they had a driving license - now here in Finland a lot more adults keep using bikes, and also use it in Winter. Back in Germany I always was the odd one for cycling in the snow.
Starting a camp fire is something I’m teaching my kids just because I don’t want them to burn my house down - being allowed to play with fire outside along with an explanation of which are the dangerous bits took the fascination out of all the fire starting equipment in the house.
Starting fire is pretty relevant skill in Finland for multiple reasons from saunas to cabins to campfires. While I partially learned at home, scouts are pretty good here and definitely taught me a lot of wilderness and survival skills.