The phrase "a last reminder" is correct and usable in written English.
It can be used when you want to emphasize that this is the final notification or alert regarding a specific matter.
Example: "This is a last reminder to submit your applications by the end of the week."
Alternatives: "a final reminder" or "a last notice".
As if any of the passengers needed a last reminder of the surreality they had just left behind in Manhattan, in several places in New Jersey last night officials were requiring people coming from the city to be fumigated as they stepped off the ferries, possibly because of fears of asbestos or other contaminants on their clothing.
At the end the melody reappears once again, like a last reminder of love, interrupted by the death stroke.
Here, running just north beside Farringdon Underground station, is Turnmill Street, a last reminder of the water mills that stood over the river in medieval times.
His whistling "was … just short of physical assault, a last reminder … that this black boy, Till, had in mind to possess her".
The next morning, as we pulled onto the paved highway that would lead us home, a diamondback rattlesnake slithered across the road, a last reminder of the wildness we had come to see.
The plump plums ($5 a quart) from Corner Copia of East Windsor were a last reminder of summer, while the pumpkins (39 cents a pound) and mums ($5 for large plants) were autumnal.
For Diab Serriya, who was imprisoned in Saydnaya from 2006 to 2011, the reconstruction serves as a lasting reminder.
Strachan later revealed his watch had stopped working at full time in Slovakia; a lasting reminder from above, he said, of the sense of hurt.
Though lending his voice to Lewis Carroll's ponderous Blue Caterpillar stands as a rather minor role in Rickman's packed CV, it does serve as a lasting reminder of his role in shaping pop culture.
The wall may have gone, but a small triangle of land in Bethaniendamm, a street in West Berlin's alternative Kreuzberg district, is a lasting reminder of that era.
Each commemorates a man murdered in the most controversial incident involving the British army in Iraq, a lasting reminder of the tragedy that took place in a squat storeroom one sweltering morning 2,500 miles away.
