Ever since I can remember I would buy all the toy robots I could find and pay for. More often then not they wouldn't last long because I would open them up and see what was inside.
About 8 years ago I published a rather famous post in the amateur robotics community about the internals of the the then very popular robosapiens robot from wowwee (now a quite famous toy robot company).
I think I bought it the day it came out and I was one of the first that took pictures of the internals and documented them. I have lost the post a long time ago but I recently found this link to the article and it made me think about. I still have the robot. It's my daughter's toy and it still works!