I think of completely trivial things in extensive detail a lot.
For example:
I've spent the better part of a half hour thinking about the redundancy of taking a picture of a camera.
I mean, really. Taking a picture WITH a camera OF a camera just seems redundant to me. I know it's necessary for selling the camera, as a picture of the product is generally called for. It's just odd to me.
I continued thinking about it. I began thinking, "Well, I wonder if they're taking a picture of the camera with the same type of camera as in the picture." I decided that was unlikely. With crap cameras, they probably use better cameras to take the picture. Also, what about really nice cameras? I was wondering whether or not they actually take the pictures of the really nice cameras with cameras of equal or greater quality.
Seriously. I think about completely trivial nonsense all the time. That's probably not even the most pointless.