Not having a garage, and the last month and a half of rainy weather has put a toll on doing anything outdoors-related.
Fortunately, I was a few drilled holes shy of finishing this, and got it done a few days ago. (Of course, it was only a few cuts, some measuring, and drilling, but I don't use power tools in the rain, or inside the apartment)
It doesn't look like much, but it's holding nice and tight.
Next up is the sub box I started working on. I just need to cut and assemble it, I have most measurements marked. Oh, and pick up some carpeting for looks.