Purse organizers, are they worth it?

I've seen these on the internet a lot when looking for tutorials, Has anybody ever used one of these before?

Here is a tutorial for it, I've seen another one that uses interfacing instead of batting, depends on if you want it stiffer or not..

Here is a slightly more complicated version of this, which I find interesting: These are the kinda things that make me want to take these and create one that fits exactly what I would need it to do (Hold diapers, and bottles, and baby food :) )! That's what I enjoy the most about sewing is letting my creativity take something and make it better :)