"mine børn ville aldrig drømme om at lave ballade" is also correct.
Why not 'lave noget ballade'?
It wouldn't be wrong.. It's just not how we say it :)
Do you Danes really say it this way?
hehe! if our children are really that well-behaved, yes!
ville or kunne are about the same could or would
Why 'finde på' and not 'overveje'?
Good luck with that.