I have a friend of mine who had a fantastic practice and a big mitzvah. He brings an extra tie to every wedding he attends ( and he's been too many and unfortunately is still single). You have no idea how many times a family member who was getting ready for pictures and had no tie. He gives out these expensive ties and often does not even get them back. That does not stop him from continuing this very thoughtful practice.
And it's environmentally correct! Recycle those ties!
Also gives him a chance to buy some groovy new ones!