The gift she gave the royal in 2017 was detailed in Omid Scobie and Carolyn Durand's 2020 book Finding Freedom, and has recently resurfaced after Harry and Meghan released their bombshell Netflix docuseries earlier this month.
It is reported Meghan gave Prince William a spoon with the words ' cereal killer' engraved on it in an effort to impress the family.
"Meghan's biggest challenge was finding the perfect novelty gifts to amuse her new extended family," Omid and Carolyn wrote in the book.
"At least one of her gifts was a huge hit – a spoon for William that had 'cereal killer' embossed on the shallow bowl end of the utensil."
Like any other, the British Royal Family have their own Christmas traditions, one of which involves gifting each other gag gifts.
On Christmas Eve, the family exchanges their presents, which they lay out on trestle tables and swap after afternoon tea.
Royal correspondent Phil Dampier told Express.co.uk: "The adults exchange cheap joke gifts, with Harry once giving the Queen a shower cap with 'Ain’t life a bitch' on it."
King Charles snubs Harry and Meghan
In King Charles' first Christmas address since Queen Elizabeth II died, he praised both Prince William and Kate Middleton but did not make mention of Meghan and Harry.
“Christmas is a particularly poignant time for all of us who have lost loved ones.”
📺 In The King's Christmas Broadcast, His Majesty reflects on Queen Elizabeth II's faith in people and thanks those who have given their time to help others. pic.twitter.com/8RFCq6Wk0G
— The Royal Family (@RoyalFamily) December 25, 2022
"I particularly want to pay tribute to all those wonderfully kind people who so generously give food or donations, or that most precious commodity of all, their time, to support those around them in greatest need, together with the many charitable organisations which do such extraordinary work in the most difficult circumstances," he said.
The King then went on to praise William and Kate for a recent trip to Wales where they "shined a light on practical examples of this community spirit".
Never miss a thing. Sign up to Yahoo Lifestyle’s daily newsletter.
Or if you have a story idea, email us at firstname.lastname@example.org.