mason's new hobby

This past week Mason bought himself a pocket knife.  After school, the first day, I went up to check on him and found him cutting up nuts on a wooden box.  I asked him to come down and cut them in the kitchen. He was surprised I didn't get angry.  He hadn't hurt anything.  I mostly wanted him down with us in case he cut himself.  He regularly asks if can use his knife to open cans for meals and at mealtime.  :0)  I hope he remembers never to take it to school.  He loves it!