Lusting for a pair of Gucci Tennis 84s or Geoff McFetridge Nike Vandals? You instantly set up an eBay alert and trawl online forums for secondhand sneakers. It might take a while, but sooner or later you know you'll find what you're looking for. The same Internet practices can be applied to pieces from defunct brands like Cloak, or garments from past seasons by designers like Raf Simons or Hedi Slimane. If your sneaker tastes are super obscure, chances are your clothing choices will become equally esoteric.