It’s become a Tiny Desk tradition for artists to leave a small offering on the shelves — a tchotchke, a toy, a signed album or piece of swag, a guitar pick, that sort of thing. Usually, those pieces get absorbed into the visual din, but sometimes, they change the look of the Tiny Desk permanently. All of which is to say that when Chappell Roan finished her magnetic performance, we immediately sought her out to sheepishly ask if we could keep her wig.