What to Put in a Blog?

So, I've had a couple ideas for posts float through my head but I haven't really gotten around to any of them. I'm still trying to figure out what to blog about--most of the things I have on my mind seem a little too big for individual posts. I guess much of this is just laziness. I liked the idea of sticking up a picture with each post, but that's a fair amount of work.

Some things I have in mind:

• Just news about what I'm doing. Frankly, the stuff I write for the family newsletter is about as much as there is.
• Lengthy philosophical rants about one thing or another. Politics, religion, philosophy, whatever.
• Technical stuff. Maybe talking about what I do, or interesting recent problems.

Friends of mine just run multiple blogs, one for each topic they want to talk about, and then post to whichever one seems relevant at the time. This would be a good idea, but I don't output enough writing to keep even this one going. Perhaps I'll get better at it again.