If your domestic Christmas decorations aren't doing the trick, how about dining out at a restaurant with a bird's eye view of Tokyo's biggest and brightest illuminations?
Botanica, Midtown Illuminations
Offering the best vantage point from which to view the Starlight Garden illuminations, this high-class restaurant serves up French-style European food with an Italian twist. You can quaff some seriously good champagne, ordered from the restaurant's comprehensive wine list, while the thousands of blue LED lights that spot the lawn below burst into images of shooting stars and supernovas. Of course, the stunning view comes at a price: A full-course dinner at the Terrance Conran establishment starts at ¥6,300; and the wine list, while impressive, is not cheap either, with the most reasonable bottle coming in at just under ¥5,000. If you're looking for a robust red to go with a red-meat meal, I recommend Co^tes du Rho^ne, Vacqueyras Les Christins 2007 at ¥6,300.