On the way we dropped in at the shops and bought foodstuffs. They say well prepared means no worries.

Lay up for a rainy day.

She provided for her old age.

We have to save for a rainy day.

This money is for a rainy day.

Well prepared means no worries.

Forewarned is forearmed.

Are you ready for cold weather?

You should be prepared for emergencies.