Yes, this is going to be the shortest list ever: ever time I turn around I see bloggers who blog about blogging blogging about ways to come up with things to blog about. They write these as though serious trying-to-go-pro articles really need them. And I'm sick to damn death of them. So.
Here's my one tip for people who need these articles: you're either not cut out to be a serious ("serious" defined however you like) blogger or you're not blogging about stuff you're passionate about. You're trying to talk about the wrong stuff.
If you're passionate about something, you'll never run out of things to say about it. Unless it's the most narrow subject matter ever. The mating habits of naked mole rats, for example. I could probably not write about that subject for more than a few days. But then again, I'm not passionate about naked mole rats. The naked mole rat expert from Fast, Cheap… could probably blog his ass off about them, though.
I mean seriously: I have a huge backlog of posts I want to do for Needcoffee that aren't done for lack of time. Because I'm passionate about pop culture, which might be sad, but blogging brings out the sad damn-i-need-a-life in all of us.
If you're blogging just for you–which is basically what I do on here–then yeah, blog whenever the mood strikes you. But if you're really trying to do Something ("Something" defined however you like) with your blog and you're getting writer's block, well…other folks might try and dress it up and make you feel good, but I'll give it to you straight. Either take a long, hard look at your tactics and change them up, or just face up to the fact that it's a hobby.
