Mora is your go to, good quality at an affordable price, stay away from Beavercraft and the like as they are absolute rubbish in my opinion, others may have a different experience of these, but i found the spoon knife to be awkward if not dangerous to use because of it's shape, the fixed blades, i found uncomfortable to use and none of them were of particularly good quality, again in my opinion.
Tools i would recommend and that i personally use
Mora 164 spoon knife
Mora 120 carving knife
or
Mora Basic Wood Carving Knife
Optional if you trust your littleun with a larger knife would be a Hultafors HVK or Mora Companion or the like.
Any Victorinox with two blades (large and small) for general whittling, the Hiker is my preferred model and i use one almost every day for general whittling of things like wooden flowers, wood spirits of which there are lots of examples of my work on this forum
bushcraftuk.com
bushcraftuk.com