As you may recall from an earlier post, I didn't really see the point of organizing Legos - until now! I just saw this video about Box4Blox, and it convinced me. We don't have many Legos around our house these days, so I haven't tried it out, but it sure looks easy to me - even kids can do it!. The website says they are available at Amazon, but that is not the case at the moment.
Here are some other ideas, but I still prefer the Box4Blox.
More on toys: