Finishing shelves can be a time-and-space consuming process. To take a big bite out of both those problems, I made some T-shaped standoffs. The trunk of the T is narrower than the shelf for the sake of applying finish all the way to the edge without buildup (photo above). After finishing one side of the shelf, just flip it to finish the other side. And you can stack them safely on top of one another while the finish dries.