Urmstongran my childhood was very much like yours, simple activities: making go-karts, climbing trees, building dens, helping neighbours with shopping or gardening. Lots of fun and freedom, learning how to make friends and cope with disagreements and rejection. Learning to be responsible and streetwise, and respect and communicate with adults. Just enjoying the holidays through the year. Happy times, and most of it was free! I'm glad I was part of that generation, not ferried everywhere by car and restricted because of fears for my safety.
Last summer one of our GC said they were going to climb trees in the woods with some friends. I thought What a great idea, I loved climbing trees at their age. But no, they went 'tree top walking', all very organised with safety harnesses, helmets and bridges etc. It lasted about an hour and cost a fortune! They were given so many warnings and instructions that one of the kids was terrified, couldn't complete the course and went home in tears. This resulted in her parents anger because of the wasted money. The hour long event cost more than we ever spent on a weeks holiday!
I do think many children today don't really know how to entertain themselves or cope with being on their own. They're not content with their own company or silence, so they turn to videos, TV and social media because it requires little effort on their part. In addition parents work full time, often from home, so in the school holidays they still have to work and children may be left with childminders. Some children are lucky enough to spend time with their GPs in holiday time, but not all GPs have the energy or funds to take them places or provide expensive activities.
I wonder what memories today's children will treasure from their childhoods when they are grandparents.