A Plain Old Afternoon with Dad

I picked up Ian from school as I do once or twice a week. The goal was to take him for a haircut, then for a while to Daddy's office to help with a project.
On the way to the haircut, Ian noticed a convenience store with the high-security fences and barred windows common in some parts of Durham. Presumably noticing both the food visible through the windows and the perimeter fencing, he said, "Daddy, is this a store for food or a place that fixes cars?" I told him it was a store for food. I read him the sign - New York Mini Mart. Ian said, "Daddy, that doesn't make sense. We are not in New York." I asked, "Have you been to New York? Who do you know who lives there?" He said, "Grandma and Grandpa live there. But why do they call this store 'New York?'" Why indeed? I understand New York-style pizza or cheese cake, but are New York convenience stores so noteworthy or distinctive that the name New York should be invoked? For the record, I explained the difference between New York City and New York State, but I'm not sure that took.
The haircut went swimmingly. He was very patient and delightful. I took him for a small DQ Blizzard afterward, because he had said he was hungry and asked for a special treat, and I used it as leverage to ensure his delightfulness during the haircut. Yes, I can be that manipulative.
We went to Daddy's office to make a cage for Daddy's audio electronics. The idea is to use it to secure the electronics that feed my in-ear monitors to my music stand while gigging. More importantly, it was an opportunity to show Ian how metal is cut with a band saw, drilled with a drill, and then smoothed with files and a deburring tool. Ian was eager to help; I would try to show him how to use a tool (for the record, I did the sawing by myself), and he would say, "I promise I will do it just like that." He is also good at threading nuts onto, in this case, threaded rod. We had to back a nut onto a piece of threaded rod, then a washer, then through a plate, then backing washer, then another nut. He got pretty good at this. He learned how to spin a nut several threads with a flick of the finger. He asked me how strong our work was. I invited him to stand on it: