The phrase "a tiny suggestion" is correct and usable in written English.
You can use it when you want to offer a small or minor piece of advice or recommendation.
Example: "I have a tiny suggestion for improving your presentation: consider adding more visuals to engage your audience."
Alternatives: "a small suggestion" or "a little suggestion".
"I only made a couple of tiny suggestions," he said recently.
Shepherd and his castmates read the lines with a simple and honest clarity that has just the tiniest suggestion of emotion.
"I refused point blank to touch even the tiniest suggestion of fat.
In the final analysis, these things canceled each other out, so that the main feeling evoked was one of middling amusement tinged with the tiniest suggestion of nausea.
Since then, Mr. Bloomberg has purchased several more, each constructed, at the mayor's suggestion, with a tiny hole in the lapel for his apple-shaped New York City pin.
That skepticism, says Silver, also explains why the panel is "strongly opposed" to proposed increases for NSF's contribution to the government-wide U.S. global change research and technology programs, and its suggestion to eliminate a tiny climate change education program.
But that doesn't excuse the relentless upselling of the funeral director, the stupid lacquers and extra-price finishes, and always the tacit suggestion that if you cared a tiny bit more, you would pay a tiny bit extra.
Brandstätter thought, based on his suggestion, that Beck would produce tiny cars, but instead he invented a tiny universe of 7.5cm plastic figures, with movable heads, arms and legs, detachable equipment and benign faces, that became known as Playmobil.
Squashed into a tiny windowless room at his strictly functional headquarters, Sproxton is happy to dispel any suggestions that the business is swilling with money.
It panders to a tiny, tiny minority.
