I found some thoughts that I think help answer that age old question at Hippies from A to Z by Skip Stone - The Way of the Hippy.
There are a lot of things that are associated with Hippies, things that we do, words that we say, foods that we eat, the style of clothes that we wear, etc, etc, etc... But Skip writes that "by focusing on the most visible behavioral traits these limited descriptions fail to reveal what lies in the hippie heart that motivates such behavior."
I think that all the "things" that we do that define us as "Hippies" have a common root that parallels Jesus' teachings. There must be a spiritual basis for our lifestyle, we should be careful to weigh our actions with the Word. Here are a few "Hippie" traits and their parallel in the Word:
Love = God is Love
Peace = Jesus is the Prince of Peace
Activism = Justice (God is a just God)
Love of Nature = Creation care (Tend the Garden)
Creativity (art, clothing, jewelry, etc) = Creative Father (We are made in His image)
Simple Lifestyle = Seek Ye First the Kingdom of God
etc, etc, etc......
Peace, Love, and Light through Jesus the Christ!
P.S. My Hippie name "Cloud" was given to me back in the early 1970's by a Brother in the Lord who described me as a "Long Hair Hippie Jesus Freak". He called me Cloud because every where he went he would run into me, at the store, the bank, on the street. I seemed to be always following him about like a little black rain cloud, so that became my name - Cloud.