[pessimizer]

The danger from knives is obvious to most children, and a cut probably isn't going to seriously injure them. Knives are not marketed as toys, and have a use other than being played with. If a child is injured by a knife, you will know it quickly, and understand the extent of the problem. Half of the people in this thread are comparing it to swallowing a penny, which is so harmless that you could make it a hobby.

This is not health & safety gone mad.