The phrase "a visual reminder of" is correct and usable in written English.
You can use it when referring to something that serves as a prompt or cue that helps someone remember a particular idea, event, or piece of information.
Example: "The photograph on my desk serves as a visual reminder of my trip to Paris last summer."
Alternatives: "a visual cue for" or "a visual indication of".
"We hoped to unify the island with a visual reminder of Dr. King's legacy of unity and peace," she said.
Artist Olafur Eliasson and scientist Minik Rosing also brought ice from Greenland to Paris as a visual reminder of the effects of climate change.
A table in the office was cluttered with Lucite tombstones, a visual reminder of the many deals done by the founders over the years.
Carroll's nautical accessories are a visual reminder of his old gig at Rogues Gallery, a company in Portland, Me., that makes mariner-inspired clothes.
How many other bands perform dressed as doctors and nurses -- "a visual reminder of the healing that takes place during the show," Daniel said -- and with hearts on their sleeves?
For about a half-hour, it looked as if the red accordion resting on the stage were a prop as well, a visual reminder of this music's antecedent, willfully being ignored.
Petals will fall down from the cathedral's Whispering Gallery at the end of the silence "as a visual reminder and symbol of those who died and those who have suffered", said the Very Rev Dr David Ison, the dean of St Paul's.
The Venezuelan president, Hugo Chávez, appeared on national television on Monday for the first time with a shaved head, a stark visual reminder of the treatment he is currently receiving for an unspecified cancer.
The Pearls advise parents to wear the tubing around their necks, like a necklace, as a constant visual reminder of the consequences of disobedience.
A visual reminder, in light of the recent Parkland student protests, that teen-agers have long been at the forefront of demanding political change.
Donating food is "a visual reminder when, instead of going to the trash, it's going into the freezer," Larson said.
