For my small one I don't order special meals since he is two. Now, at 6, he also prefers to select from the menu his daily preference, and quality airlines always offer gadgets for kids with the meals anyways, as via the reservation they know they will have a child on board a premium class.
As children's meals are not always tempting it does come to curious situations. Once, LH
put on board with good mood a children´s special for my son - and they had an extra unbooked child on board. We were in C, the other one in Y; Purser asked if a switch was possible (C to Y and my son got C-á-la-carte). Welcome change. The forseen C-child meal was not tempting at all but the child in the back smiled, so did mine, so did the crew, to make it short, everyone was happy.