Ten memorials Batman does have in the Batcave

Jason Todd

Prince's gold record for "Batdance"

The McDLT

Harley Quinn's Trick Underwear (from Batman/Harley Quinn Team-Up #24: "The Adventures of Knickerless Knicklebee")

Funnyman Jerry Stiller (n.b.: not dead)

The stuffed and mounted body of Ace the Bat-Hound

The stuffed and mounted body of Fat Alfred Pennyworth from Earth-2

Thom-El and Marth-El, Batman's true parents from the planet Batron

The 1992 Fox Thursday night lineup

Self-help author Stephanie Brown