Boris Johnson gifted Prince William and Kate a tandem bike for their wedding. However, no one has seen them out riding it since.
Wills and Kate got a Land Rover Defender 110 as a wedding gift, which they donated to charity. The car went to a mountain rescue team in Patterdale.
A tennis court
In 2004, Crown Prince Frederik and Mary of Denmark were gifted a tennis court and pavilion by the Danish municipality of Sønderborg at Gråsten Castle.
Spain's King Felipe VI and Queen Letizia received a huge portrait puzzle as a gift from the people of Oviedo during their 2004 wedding.
Whitney Houston performed at a 1996 wedding in Brunei, allegedly being paid either $1 million or $7 million by Prince Jefri Bolkiah.
A song by Elton John
Elton John wrote a song for the 1986 wedding of Prince Andrew, Duke of York, to Sarah Ferguson. He had previously performed at Andrew's 21st birthday and bachelor party.
Prince Charles and Lady Diana received traditional wedding gifts, including a bed and a Cartier clock, as well as one ton of peat from a Somerset village council for use on Charles's estate.
Onassis gifted Prince Rainier and Princess Grace a 147-ft yacht, the Arion, for their 1956 wedding. They honeymooned on it near Corsica and Sardinia. Today, the Arion is a luxurious floating hotel in the Galapagos.
A "stop smoking" course
At Crown Prince Haakon's wedding to Mette-Marit Tjessem Høiby in 2001, they were gifted a course on how to quit smoking to help the bride overcome her habit.
Andrew Motion wrote "Spring Wedding" for Prince Charles and Camilla Parker Bowles' 2005 wedding, as per tradition. However, the poem was criticized for its content being insensitive to the couple's history.