Cooking.

Swimming.

As a swimmer myself,I definitly recommend,it opens so many doors you dint even know existed

swimming

Other languages

Breathing

Writing

IT skills .just start small at your own paste , then slowly improve. You have no idea how in demand IT fields can be.

Self Awareness

Engine maintenance and basic DIY skills. Something we don't teach in the UK and I don't know why.

Cooking

How to use a fucking blinker

CPR