That is a self-made soldering kit box I made when I was in college and had to haul it around a lot. I have actually been meeting to replace it with something more permanent now that I’m a grown up with my own house. I have an air flow soldering rig which doesn’t really have a home, and I could have a much better use of space. I have my brocade ICX6610-24 next to that which I’ve been programming for way too long, and a whole bunch of 3D printer parts on top of that.