My son was obsessed with Thomas the Tank Engine too from age 2-5. We have everything under the sun for the wooden train tracks. But once he turned five, absolutely no interest. He maybe brought them out once when he was six, but it was more to show some younger kids that had come out. He had one electric train during the age 5 to 6 set thinking he had moved on to the electric trains. Pulled it out once or twice. That's it. My son's 9 and is obsessed with Legos and Minecraft - pretty much since age 5. No indication that is it going away anytime soon. Same with all his 3rd grade friends.
Now, if I could just get my stuff together to put all those wooden Thomas the Tank Engine sets on craigslist or ebay!! Two full (large) blue totes.
