can do with

could do with (something)

One would benefit from something. In this heat, I could do with a cold glass of water right now. You could do with some new shoes—those ones are looking awfully beat-up.
See also: could
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

can do with

Also, could do with. Might profit from, needs, as in This room can do with a good cleaning, or Harry could do with a new suit. [Colloquial; late 1700s] Also see do with.
See also: can
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
"Surely there's something I can do with it." Her favorite concoctions?