This museum is located at 26 Seah Street, just opposit Bras Basah Complex. There are really lots of old and vintage toys which occupy 5-floors of the building. All of the toys collection are well-categorized on each level, and you'd see a number of your old-time favourite characters there, like Popeye, Tintin, Bonzo, Disney characters, Flintstones, and many more. There are also lots of memorabilias. Furthermore, there is a Cafe/Restaurant/Wine Bar in the basement (but I didn't get to go there then, hehe...).
I took more than a hundred pics there, but shall only post a few of them here. Maybe your childhood memories would resurface when you get to visit this museum yourself =)