The reason you are not seeing photos of completed carousels all over the place is quite simple. These are a BIG project. You aren't going to complete one in a short time. I have spent two pleasant evenings working on mine, and I have 0.5% of it complete. Perhaps. It is probably because I'm doing complete layouts for each page, with journaling and embellies. But I'm using my stash!
Come to think of it, I've seen only two photos of completed carousels; one was filled with a card collection and the other was a baby album made before the baby was born, with no photos. Hmmm..... But the baby album did give me a couple of ideas for pages that I'd like to include. I've got to track down chipboard, though.