Cool idea BP!!!!
Willow came from the tree in my back yard when I was a kid. I would swing on it's limbs and always enjoyed the graceful swaying. It also isn't easy to break one of those limbs because they are flexible. They call them "weeping willows"... and I have had my share of sorrow. Yet there is medicinal qualities in their bark. Aspirin is derived from the willow bark. The wood fibers are long and strong too. The wind blows and they sway instead of breaking. I can't think of anything else... except that maybe in mythology the willow is indicative of spirituality and wisdom. I kinda like that if it's not too eerie.