that's an idea

that's an idea

That idea could work. A: "We could ask my brother to play music for the wedding." B: "Yeah, that's an idea. Do you think he'd be interested in that?"
See also: idea
Farlex Dictionary of Idioms.

ˈthat’s an idea!

(spoken) used to reply in a positive way to a suggestion that somebody has made: Hey, that’s an idea! And we could get a band, as well.
Farlex Partner Idioms Dictionary
See also:
  • that's an idea!
  • bounce an idea off (of) (one)
  • bounce an idea off someone
  • put (something) in (one's) head
  • put (something) into (one's) head
  • put in head
  • put something into someone's head
  • abstract idea
  • toy with
  • toy with (someone or something)
References in periodicals archive
That's an idea for any Bluebirds' fans opting for a Welsh-sounding Ffidrac!
wakeywakey That's an idea, let them that use it pay (the simplest ideas are the best) and remove the small element from my poll tax.
As Easter approaches, that's an idea - an enduring concept - to contemplate.
The source added: "He likes being with a group on stage and that's an idea Simon's on board with too."
McCoy's frustration was exacerbated when That's An Idea was pulled up in the Calvert Carpets Handicap Chase.
Thirty-five minutes later Albertas Run was a distant third in the Levy Board Chase before That's An Idea was pulled up in the Calvert Carpets Handicap Chase.
But he couldn't boot Abutilon, Albertas Run, That's An Idea or Quipe Me Posted over the line.
The conversation led to the issue of traditional African attire vs the western style of dress, which you mentioned in the New African Women (July/August issue), and I thought that's an idea for a future detailed article for your magazine as well as other topics such as the oversexualisation of women in videos and how it shapes the view of the Black woman and the issue of natural hair styles vs perms and weaves.
Editor's Note: That's an idea you engineers can take to the bank!
That's an idea being tossed around on dozens of online bulletin boards and blogs: TMZ.com, TVSquad.com, Diog.com, and Defamer.com, to name a few.
David Wachman-trained That's An Idea is sure to be a warm order in the beginners chase.
Why, that's an idea that might even fit the plot of 007's next action flick.
That's an idea that was introduced several years ago but didn't seem to take off at first.
For many in higher education, that's an idea worth resisting.
In the third category, that's an idea that's been around for years--since the very first AIDS vaccine in 1986 was tested as a therapeutic, the Zagury trial.