My DCs are both 'bright' and are attaining well at school.
We don't do worksheets, but we do bake cakes (measuring) sometimes putting the butter on top of the sugar, so they have to add the two amounts together.
We look for interesting things on the internet about projects they are doing.
We follow up an interesting question from them with a more tricky one back to them.
We sometimes write sheets of sums for them, but only when they pester us to
We encourage them to write and read a wide range of topics - including newpaper articles, internet stories.
Most of it is very reactive I suppose - in a way that sitting them down with a worksheet isn't.
My dd (y4) does already get 30mins of homework a night and DS(y2) does spellings and reading. So I think they do plenty anyway - especially once they've found time for any afterschool clubs they go to