If you go off this issue it looks like they use tinsel at Christmas, although I'm not sure where that logic is.
As a(n) (English) Brit, I believe this could be quite an excellent indicator of whether I should be drinking Guiness, Tea, Whisky, Pimms, Champagne or Mulled Wine at any given time of the year. I suppose it should live in the Kitchen, near the kettle, or the wine cooler.