One of the cool things that presidents get to do is change the decor of the Oval Office. We're not just talking about the pictures or busts or knickknacks on the shelves; we're talking chairs, sofas, and perhaps most importantly: the oval shaped rug that will adorn the Oval Office for the rest of that president's presidency and for a couple years into the next administration.
For the first couple years, President Obama has used the Bush 43 decor until his own furnishings were ready. Those Bush items, including the sunburst rug, are off to a future home in the Bush Library and Museum. When the president was recently on vacation, the Oval Office was renovated. According to the White House, no taxpayer money was used for the makeover.
Vanity Fair has a compilation of Oval Office decor going back to Jimmy Carter and you can vote on your favorite.
One thing I have noticed: there is always a fresh bowl of apples in the Obama Oval Office.