The more indestructible a dish is (or a toy, or a piece of furniture, etc) the better it usually fares in the hands of a child.
There's nothing green about going through numerous sets of dishes as little Johnny accidentally drops them all on the kitchen floor.
That's why we like the Confetti line of 100% recycled melamine dishes from Zak Designs. The prices are reasonable ($19.99 for a set of six tumblers); the colorss are bright and cheery (perfect for kids); and they're just not going to break. Go ahead, let little Johnny use the plates as frisbees ...