Kerry Callen began to suspect that Detective Comics-era Batman was a hoarder — how else to explain that cave full of pointless batarang prototypes and other tchotchkes? So he drew a two-page comic exploring his thesis in detail. I find the case compelling. He notes, “the objects on the bottom of page 1 are all from actual Batman stories; Detective Comics #244, Detective Comics #235, Detective Comics #241, respectively.”
(Thanks, Fipi Lele!)