There are many patterns suitable for use with neckties beyond the obvious Bowtie.  Flying Geese, small Pinwheels, and even a small Delectable Mountains can be used.  Any pattern with pieces smaller than about 5" square can be used.  Remember that you probably can't get more than 1 large piece per tie.  Stabilize the ties with fusible underlining (such as HTC's Touch of Gold) to make them easier to use.