Drawing stick people clearly - achieved at age 1.5
Writing clear phrases - Age 4
Writing speeches/short stories - Age 6

Really, those magazines are just written to make people feel good about themselves - "OMFG! I have an "overgifted" child! I'm tho speshal!"

Speaking of which:
Completed 7th form - age 16.
Accepted into International Chemical Olympiad training group - age 16.

And so on.