Some people go all out for Christmas decorations– particularly in the U.S. Fortunately, if you’re a Yankee here in England, you can have your fill of far too much Christmas cheer if you get thee to Cambridge.
Specifically, the Empress Pub in Cambridge. Every year, Cambridgeshire’s supply of tinsel is applied to walls, chairs, and anything (including regulars) who aren’t standing still. Tinsel town’s location details here.
Nowhere near Cambridge in the UK? Buy as much tinsel as your arms and budget will allow. Festoon it around every surface of the smallest room in your house that’s not a bathroom. Drink warm beer until you hallucinate.