I've visited that cafe once or twice, and each time the staff treated me like an old friend.

I like to take long walks once in a while to clear my mind.

Before the guests arrived, she gave the living room a quick once-over to tidy up the pillows and sweep the floor.

He calls his old friend once in a way to catch up.

Seeing the northern lights was a once-in-a-lifetime experience that we will never forget.

I treat myself to a slice of cake every once in a while to celebrate small victories.

Alright team, once more into the breach — we have a deadline to meet and no time to waste.

She goes to the theater once in a purple moon, when she finds a free evening.

Legends say that once upon a time a great storm shaped the coastline we know today.

I visit my hometown once in a blue moon, usually only for special family events.