I think Duplo should be safe for all kids, just not very interesting when they are too young. They used to have an actual Lego-made product Quatro for a short

I think Duplo should be safe for all kids, just not very interesting when they are too young. They used to have an actual Lego-made product Quatro for a short period, but no longer. Megabloks are the next best thing, they are bigger and have much less clutch power than Duplo.