Last Updated: 08/10/2018
Recently I've discovered there is an application called Quidd which has 3D models of FNaF Mystery Minis. (you have to download it as an app through Google Play or Apple).
Source: https://quidd.co/
(I'm not sponsoring Quidd or anything, just posting what I found)
It is pretty neat in it's own right, but what interest me is there are several models of unreleased figures. You can select a figure and rotate it around in a 3D space, along with zooming in and out. If this interests you, I'd totally recommend trying this app out if you can. It's free and you can preview the figures you don't have, so no need to rush to collect them. How I came across Quidd was other people online posting about some of these unreleased figures, such as Bidybab. Below are each of the box collections with a picture of the figures, their names, and their quote. 