Swiss artist Christoph Büchel made a piece out of a pair of his socks that were kicked around Hauser & Wirth’s booth and went for €20,000.

"Frog Queen" is located in Graz, Styria, Austria. It was designed by SPLITTERWERK and looks like one giant pixelized box.

More Frieze coverage, which is on show in London’s Regent’s Park through October 18th.