This talking Dalek plush we received for Hanukkah gives Ivan the giggles.
He laughs with glee as it says, “Exterminate! Exterminate! You are an enemy of the Daleks. You must be destroyed.”

The tickle-and-fun Elmo that Ezri got at a garage sale makes him cry every time.
Elmo giggles and says, “that tickles.” Ivan cries and points at Elmo.

Ezri was quick to notice on the back of the package that we “need” to get the red Dalek and the other blue one that were pictured.  I had to tell her that “the other blue one” was a Tardis.