I would buy several of these

Great storage for all of your Legos. With kids these little things get lost so easily. This has been a big help with keeping there Legos organized and all together

I recently ordered this for my 4 year old son who is a huge fan of Lego mini figures and who also loves to keep all of his little pieces separate and organized. The current case he has is no longer big enough to fit all of the Lego pieces he has so I wanted to get something bigger.

This was on Amazon.ca for $25.99 which didn't seem too bad and when I received the case I thought it was defiantly worth it. This is a very sturdy case which has deep individual cube shaped storage areas that provided plenty of room for my sons Lego collection. He also loves that it's blue and had a handle for him to carry it around.