Motif Folders

I have some cross stitch fonts from books or my own design that I would like to use. I think it would be appropriate to save these as motifs so they can be pulled into the design as needed. But it would be nice to group the letters into folders within the motifs section for easier searching rather than having hundreds of motifs to search through.

Or if someone knows of an existing method for storing custom cross stitch fonts, please let me know!