expect that some of the ties will ravel more than others--I made a tie skirt during my hippie days in high school, and they were different weights, some silk others a poly, etc. Since it's entended as a heirloom--maybe foundation pieced?
I have made a necktie quilt and they are beautiful. Try the book Daddy's Ties by Shirley Botsford's, great ideas. Take the stitching out and the interfaceing then wash by hand and line dry. Beautiful Material, have fun. Try the Christmas Stocking real cute.