Make Single Posts from Photos and Media

Many WP themes with rich photo layouts require you to have several posts with photos as the featured image. Getting started with a theme like this is frustrating because you have to manually create a bunch of posts with a single image in each before you can see the site’s intended layout.

I would like to add a bunch of photos to a site’s Media area first, and have it auto-generate a post for each piece of media. I’m amazed this doesn’t exist yet!

If you’ve heard of a plugin that does this or could talk me through developing one, I’d be much obliged.
Thanks-
Ted