There was a small area between the dining room and the bedroom that had some weird wood in the floor. I found out why when I removed it and tried to piece in some pieces I had pulled up elsewhere. The opening was a little bit bigger than the thickness of two pieces. So, I decided to fill it using the maple floor that I had left. Here's how it looked when I was about halfway through. I think it looks pretty good.
Now all I have left to do is some more sanding around the edges of the rooms and then I can apply the finish. Yay!