Instead Of Banning Scissors or Knives, Get Some Kid-Friendly Implements For Them
At this stage, the more you say no to something, the more your child is curious to handle things, be it scissors or knives. This is a bare fact about kids of this age. And, there is nothing much you can do about it, other than handling it smartly.
Kids are especially drawn towards things that they see their parents using. And it is your natural instinct to say no to the child because most of these objects are potentially harmful. But, looking at the larger picture, that may not be the right thing to do. Because by saying no you are actually peeking up his curiosity. So, give your child kiddie accessories that are harmless and at the same time quenches his curious thirst. This way he will be able to mingle in the household activities, and also be safe with the accessories around him.