Most of the things I horde that's legitimate are firmware for hardware. All too often I need the firmware and the hardware company had been bought and the new company shuts down the firmware.
Also a few images for soft targets so I can test metasploit ect.
Didn't Google used to have Pixel Pass where you get a new phone every 2 years? Then they killed it before the 2 year cycle was up?
Imaging companies promising you a new phone after 2 years and then canceling the program at 22 months and then said oops, here $50 store credit...