More toy museums

Things to do in Tokyo before you die. Well, preparing my upcoming trip to the Tokyo Game Show, I have decided to visit Tokyo's toy museum (as you can see from the previous posts, there is a trend here). It seems that there are at least two different museums (at least, I got two different webpages, in Japanese of course). Here's one and here's another. Does anybody out there have any info on about these places? Please let me know. Of course, I am also going (again) to the Ghibli museum.