The office also shows off his military challenge coins, which he took after departing Washington.
All presidents since Bill Clinton have carried the distinctly designed souvenirs to present to foreign dignitaries and military personnel.
Trump – who took 66 days to concede defeat to Mr Biden – adds a personal touch with family photos and a Border Patrol plaque. A glass bottle – thought to have held a Diet Coke – can be glimpsed behind his phone. He was said to drink 12 cans a day of it in his early days as president by insiders.
Nearby are reading glasses and a smartphone – although the former casino mogul may find it difficult to post on social media. He is still banned by Twitter and Facebook.
Trump also chooses to display an award commemorating his position as 45th president.
His senior adviser Stephen Miller is pictured alongside him – and posted the image. Miller’s caption suggests he too believes nothing has changed.
He wrote: “Just had a terrific meeting with President Trump.”