Big elastic band

Tomorrow I go back to London as I have an interview. I need a giant elastic band. Has anyone got one?

I'm not going crazy, there is indeed a link between the two. If I had an elastic band, I wouldn't have to buy a train ticket at such short notice and so, I wouldn't need to need to fork out £37 (with a young person's railcard!), and instead could just slingshot myself across the South of England.

Wheeeeeeeeeeeee...!