I mean, I once wrote a python script called unearthed.py that took all the files in all subfolders and put them into the parent folder, then deleted the subfolders, but I'm pretty sure I just used a simple os.walk for that.

Came in handy when working with rom archives that liked to put everything in its own folder, and a couple of times when I just had a bunch of crap that I didn't want to have to manually dig up anymore.

Other than that? No, not really.