I consume a lot of media, and I've found it valuable to keep track of my thoughts about them are. I started only reviewing anime (something I got into at a relatively late age) and over time expanded to more "stuff".
Let's be honest, I'm not going to win any critical review awards. In fact, many of these reviews are downright bad. But I enjoy going back and seeing what I thought and what was saliant back when I first watched/read the thing. And if I'm going to do it for me, I might as well force it on you as well.
Single (short) reviews:
I also wrote a number of longer book summaries which I found particularly insightful:
I occassionally like to read book summaries instead of the book itself, when I have doubts about it being worth my time. I wrote about where to find these summaries.