Hi Rod,
I always make a simple wooden wall mounted rack e.g. sometimes holes in a suitable length of say 1 1/2" x 3/4"with another piece below to support the end of the file, i.e. the file is not supported by its handle. Depending on the number of files I have and the space available. Are they in a drawer, in a rack on the wall, in a cupboard. What size are they, what profile? E.g. flat ,hand, warding, three square, round, square, needle files etc,
All of these factors will decide what you need to do, there is no one solution all situations are different.
Best regards
Terry