So, seems like your kiddo is interested in machinery. I would get him something he can control on his own. I don’t know his age, but look into a remote control helicopter or car. Another suggestion, make him a custom control panel. There’s a great link:
www.instructables.com/id/How-to-Make-a-Custom-P...

I'm guessing you have an open floorplan. When my kids were that young we were able to purchase an extra long gate to close off the one opening to the kitchen area.

Thank you. My son is 5. A gate might be good, but he is very agile and may figure out how to climb over it. Love the remote control car idea....