Younger and smaller kids really like these small things. With a 4 inch handle to hold on too, they will use their cordless Dremel's with a 1/4 inch sanding drum/sleeve to carve them. I also have some smaller rotary carving burs that they can use if they show me that they can handle the 1/4 inch drum with a sanding sleeve.
My pocket knife is there to show the size of the blanks. I'll carve some with the knife, but not the kids.