I know this is a mega old thread, but I was trying to do the same thing and couldn't find anything that lead me in the right direction. I finally found a way to do it, so I'm posting this in case anyone finds this through search.
What I needed was to put several images in a single page in Circus Ponies Notebook, where I could move each one around in whatever order I wanted instead of they being locked into cells.
The way to do it... and it's not perfect, but works for me... is this:
You need to have a generic image you can use in all your pages. I just use a very small version of my logo, but anything will work. Ideally it'll be a small, long banner.
Drop this image into your Notebook and when prompted, choose "Add for Annotation". This will create a new page with this image in the left-hand corner. You won't be able to move this one... hence why it should be small and generic.
Now, you can drag and drop any image into this page and it'll be a "floating" image. You can move it around and place it anywhere you want now.
Hope that helps.