Traditional snack : poffertjes
Another traditional snack : Olliebolen (usually for the New Year Eve party, not summer, but who cares?)
In most programs for children in Holland, face painting is popular.
...and this an example of multicultural society, a Dutch girl got her hair done in an African hair style.
Attractions for children : all are free.
I think cities in Indonesia should learn how to put children on priorities and provide more opportunities for them to enjoy their childhood, for free. Make every city as a children friendly city. I know I have said this before but I will keep saying it everytime I see a good example.