Fukubukuro

福袋Fukubukuro that is sold soon after New Year day is Japanese winter culture.  FUKU means luck, and BUKURO means a bag.  Fukubukuro is gathered items in a bag, but you basically cannot know what is inside.  Many Japanese brands starts selling and now foreigners come to Japan to get the Fukubukuro.  Recently, products of travels, apartments, or even formal marriage interview are sold as Fukubukuro.