Some chips and things from the PCB of an old Quantum ProDrive LPS hard drive. I believe this 420-megabyte drive came out of the $2,000 Compaq Presario that was our first upgrade from the 386. If I recall correctly, we had to RMA the drive and they gave us a 520-megabyte model. My teenage self was so happy to have an extra 100 megs for free. Alas, they realized their error and sent the tech to install a 420-megabyte replacement instead. As always, enjoy the museum!
Update: I mentioned this drive in the Hard Drive Nostalgia post. Funny how I once again used the price of the 486 to describe it.