Where Could Squiggles' Blankie Have Gone? Where Else Can We Find Echoes?

S1, E5: Squiggles' favourite Blankie has gone missing and she's upset. Jessy is Curious - Where could her Blankie have gone? And is there anything else that is as warm and soft and cuddly? Nessy waits at the train station for his Great Granny Grand Monster to visit for Great Grand Monster Day. Jessy is fascinated by the echoes she hears in the station. Jessy is Curious - Where else can they find echoes?