For something so objectively simple and utilitarian, this pen holder does everything so well while also looking like a piece of decor. My list of nitpicks are short, and they wouldn't prevent me from recommending this to anyone that is interested in a desktop pen storage system. The first thing I noticed is that the inside of the drilled holes are no sanded smooth. As someone who dabbles in woodworking, I know that sanding the walls of the holes is not an easy or time-efficient task, but it can be done. That said, it's not something that detracts from the aesthetic, and it also won't affect how it functions. It's not something you touch, so it doesn't really matter that the holes aren't smooth on the inside.
The second nitpick is an even smaller one. I really appreciate that the drilled out holes are also finished with whatever sealing oil or solution as the outside, but there's some obvious build-up of this substance at the bottom of the large hole that wasn't wiped away when it was wet. Since it's cured now, there's no easy way to remove it. Again, not something that affects the functionality or appearance, but worth mentioning.