OK, this is adorable. From the YouTube blurb:
A mysterious, yet strangely familiar visitor turns up at the Digital Science offices in London and deposits a package on one of the desks. Inside the box – an instruction manual explaining how you can build a working particle collider solely from seasonal decorations, and discover the secrets of quantum mechanics from the comforts of your very own home of office.
This entirely scientifically accurate video was created by Digital Science to celebrate the 2013 winter holidays. For more information on who are and what we do, please visit http://www.digital-science.com/
Presenting: The Christmas Collider!