once in a while

Friends tell him he needs to take a vacation once in a while, he says, but he has no interest.

"I will miss him so much and hope he haunts me once in a while," she added.

Scioscia says he could communicate with Fernando well enough to go out to the mound once in a while and discuss pitches.

Trump may not ever eat a vegetable but I'd guess even Republicans like to eat a salad once in a while.

And every once in a while, you’ll come across a movie that features bearer bonds as the mark of choice.