At the beginning it looks very simple and you have the estimation that you could never make something more complex with it, but as said I made the whole upgrade parts for my 3D printer with it. But there is no option to texture your objects with it, cause it's mainly meant to make printable parts. For this you have to use another program.

Here is something I also made with it, so you can see what's possible to do with it:

P.S: I also took some things from thingiverse an adjusted them for my needs . So if you have a good free 3D part (without any copyright etc.) to start with, you can fully adjust it for your needs.