Toiletries and pharmaceuticals. Suitable boots or shoes. Umbrella. Travel alarm clock. Clean and crisp bills (new banknotes are best if you can get them). Photocopy of passport and visa (just in case police stops you to verify your registration status). Warm hat, coat, clothes and gloves in winter. Appropriate-type film and battery for your camera. If using APS, be sure to bring enough film, as APS film is not sold in many shops in Russia. A power converter and adaptor. Russian standard is 220 Volts AC, 50 Hertz. If bringing a laptop or other electronics from US, bring an RJ-11 adaptor for the Russian plug, preferably with two RJ-11 sockets.