Please do some sort of service for the benefit of humanity, like bring some old clothes to Goodwill or sign up for some hammer and nail work at a local Habitat for Humanity project. This is not a day for vanity items. It is a day to affirm the spirit of cooperation, empathy, humility, and good will between MOST of the people on this planet. Holding up a sign means little. Only real effort, actual service, getting your hands dirty in the name of love, will help. Helping others means everything.
Remember, a few people who hate wanted everyone to hate, so the proper response is to love. That's the one thing they don't want!
http://911day.org/