Prince Harry and Meghan’s luggage included a blue children’s scooter and a wooden swing which is similar to that given as a present by Charles to William and Kate.
The Sussexes were photographed in a black Range Rover in Santa Barbara, California, last Sunday after reportedly travelling back to the US by private jet.
Images showed Harry sitting in the front seat of the car alongside the driver.
And photos have also emerged of their luggage as it was taken off the plane at Santa Barbara airport with one handler carrying a wooden swing with rope which had a blue wrapper.
And another member of the Sussexes staff took a blue scooter and put it into a car.
The wooden swing was similar to that which the Duke and Duchess of Cambridge's son Prince George was seen playing with in 2016, which bore his parents' names William and Catherine.
It was a wedding present from Charles and was kept at their Norfolk home.
The Sussexes’ second child Lilibet celebrated her first birthday last Saturday in the UK during the Platinum Jubilee festivities and it is thought she will have met the Queen who did not attend Epsom races that day.
Lilibet, born on June 4, 2021, at Santa Barbara Cottage Hospital in California, was named in honour of the Queen.
Harry and Meghan kept a low profile while in the UK, having been seen briefly at the Trooping the Colour and then the Queen’s thanksgiving service on Friday.
But they didn’t stick around for the Jubilee concert where thousands of royal fans packed The Mall.
The royal family Twitter account posted a balloon emoji and the message: "Wishing Lilibet a very Happy 1st Birthday!"
The Duke and Duchess of Cambridge, and the Prince of Wales and Duchess of Cornwall, also posted birthday messages on Twitter.
Elsewhere, Meghan's hairdresser George Northwood published pictures on Instagram of her and Harry.
He wrote: "So nostalgic and wonderful to be reunited Harry, Meghan and their family in the UK. Archie has grown to be the cutest, well-mannered little boy and Lilibet is just beautiful."
An informal garden party was reportedly held at Frogmore Cottage, with many of Lilibet's royal cousins in attendance at the bash.
The party included picnic food, party games, balloons and a cake, The Sun reported, and the one-year-old was presented with a number of lavish gifts including a pink toy car.
Lilibet, the Queen's family nickname, was first used when Princess Elizabeth was just a toddler and unable to pronounce her own name properly.
Her grandfather, King George V, would affectionately call her Lilibet, imitating her own attempts to say Elizabeth.
The nickname stuck and she became Lilibet to her family from then on.
