Get the building / creative toys out

Get them helping in the kitchen

Get out for a walk

Swimming pool trips always a winner

Head down to your local park

Have an impromptu kitchen disco

Take bikes out to the park

Pile on Uncle Adam

Have a water/ water balloon fight

Hide a few things in the garden for an impromptu treasure hunt

Keep a dressing up cupboard full (check out charity shops to find random accessories)

Teach kids how to skip (or not... Just laugh at them trying)