Christ! We're do I start?
Some epic things like MCR/Blackpool both when they were 11, camping weekends with big camp fires, taking them to Llandegla/Cwmcarn/Clayton Vale with their mates, extreme Landrover competition events which both boys love to do....
Then there is the other stuff, homework, their hobbies, nurturing them to be confident adults by getting them to phone or ask questions in shops/restaurants/train stations etc
Life skills like swimming, basic DIY, finances and negotiation, etc. If one of them fell in a river I think I would be reasonably happy stood on the banking telling them to stop messing about and swim to the side.
I'm hugely proud of my kids and I think they are well set for life. I've done enough (could have done more I'm sure) but in the next few years it will be over to them to pick up the ball and run with it.....