New tool day is always a good day! If you're getting rid of any of it you won't use, please let me know 🙂 at a guess the file you mentioned goes in the black block with the screws in it, for beveling fret ends. The red and black handled things look like fret tang nippers (I've been trying to find a decently priced set of them for a while). No idea about the blue nylon block I'm afraid!