There are so many patterns available now that use 2 1/2" strips and these can give you many ideas for using neckties.  The typical tie is around 45" long and 3" - 4" wide at the narrowest.  Cut some 44" x 2 1/2" strips of HTC's Touch o' Gold II, fuse to the wrong side of your dismantled ties, cut and use according to your favorite pattern!