DS2 is about to turn 4. He is obsessed with trains and that's primarily what he plays with. I have NO idea what to get him for his birthday in less than 2 weeks. Does anyone have any unique train-related suggestions? We have a ton of wooden thomas and Brio trains, a nice Lionel train set, train DVDs, a train conductor outfit. I am taking him to see a train documentary at one of those HUGE surround-type movie theaters for his bday and we already have plans for a steam train ride in April. When he's not playing with actual trains he is pretending other things are trains or he's pretending that HE is a train and refers to himself as "the polar express" in third person ("Mom, the Polar Express wants a snack") Any suggestions????