#PeaceTree is a wifi-enabled string of lights that light up whenever someone tweets the hashtag #peace. The lights will twinkle in a special way when anyone tweets with the combined hashtags of #peace #peacetree. Invented by one of the owners of the Reach & Teach shop in San Mateo, CA. I was there when the idea was hatched. You can see the original Peace Tree live at this link: https://shop.reachandteach.com/reach-... (And, yes, these lights are not on a tree, per se. But tweeting #PeaceDriedFlowers won't work.)