Djeco Lock PuzzleWill they find the right way to open the 3 doors? The Lock Puzzle from Djeco is great for supporting the development of their fine motor skills, hand eye coordination, dexterity and cognitive thinking. It's great for teaching them a little bit of patience too, as they try to understand how each lock works. They will get a real sense of achievement when they work it out and it's one of those toys that's guaranteed to have them coming back time and time