throw a 'hippy party'

Last autumn I threw a halloween party, we made pumpkins and pizza. For this summer (my birthday) I think i’d like a hippie party, with music from Camel (yayy!), friends in hippie clothes (if i could ever make them wear that crazy stuff), hippie food and sitting around in the grass (not thát kinda grass, you junkie! ) we could have a vegetarian barbeque, but thats not very hippie. we could create something (like the pumpkins at halloween, everyone liked that) like paintings, shirts, bags, flower-thingies…... any ideas anyone?