One toy you played a lot with when a preschooler was the Joker's Funhouse. It went along with the Batcave set we had (Though you liked the Batcave much more!).The Joker's Funhouse was the Joker's hideout and had lots of places where Batman and Robin could get trapped. If you pressed a button, the Joker laughed and taunted Batman, though I can't quite remember what he all said.
One of the Batman books we had involved Batman and Robin capturing the Joker in a carnival funhouse, so I think the playset was made all that much more fun because it related to a story you knew!
