now and

(every) now and again

Occasionally; sometimes. I don't travel often, but every now and again I just need to get away from the city. My mom has sweets now and again but mostly eats only healthy foods.
See also: again, and, now
Farlex Dictionary of Idioms.

now and

again/then
Occasionally.
See also: and, now
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • (every) now and again
  • every now and
  • now and again
  • now and again/then
  • once and again
  • we must do this again (sometime)
  • over and over
  • over and over (again)
  • Let's do this again
  • let's do this again (sometime)
References in classic literature
In the dusky evening light and stillness--for the sun had gone now and the wind had altogether fallen-this inverted yellow face was anything but a tranquilising object to discover suddenly a couple of yards away.
The War in the Air
So they played Robin Hood all the afternoon, now and then casting a yearning eye down upon the haunted house and passing a remark about the morrow's pros- pects and possibilities there.
Tom Sawyer
"You urge me to try a chance, to marry you now and trust to luck for it to come out right.
Burning Daylight
Says longtime Democratic strategist Donna Brazile about the decision to back Moseley Braun, "I understand why NOW and the [National] Women's Political Caucus wanted to make a statement.
NOW what? NOW's endorsement of Carol Moseley Braun was a symbolic act. But some feminists wonder: is this the right time for symbolism?
Last winter she railed against the notion of liberal bias in the media, arguing in The Boston Globe that leaders of the tiny (600-member) Independent Women's Forum (IWF), a conservative women's group, appear on talk shows and the op-ed pages of major newspapers regularly, while NOW and FMF leaders don't.
You've lost your way, baby: how organized feminism has made itself irrelevant
How far, how long, how high, what's there now and why.
Parade