Please don't ask because I have no clue what a Rubby Chicken is.
Wizard hats on display at Madam Malkins
Mannequin heads and torsos at Madam Malkins
Hermione Granger and Albus Dumbledore's robes from the Yule Ball. The ones in front are Gilderoy Lockhart's.
The spiral pink staircase at Honeydukes candy shop that leads to nowhere
Spooky Dobby dolls
Creepy stage show at Diagon Alley
Deadly looking mermaid