What are some cool things to do with my room?

So im a teenage girl, and im painting my room a purple/burgundy colour sort of like http://www.google.ca/imgres?imgurl=http://chatspacehosting.stelivo.com/images/darkpurple.jpg&imgrefurl=http://chatspacehosting.stelivo.com/appletcolours.html&usg=__pKu14JYTOAn251cyjHgGaWCsC7w=&h=684&w=1404&sz=136&hl=en&start=184&tbnid=awuUTrUB32CUJM:&tbnh=80&tbnw=165&prev=/images%3Fq%3Ddark%2Bpurple%26hl%3Den%26client%3Dfirefox-a%26rls%3Dorg.mozilla:en-US:official%26gbv%3D2%26biw%3D1024%26bih%3D434%26tbs%3Disch:10%2C5602&itbs=1&iact=rc&dur=342&ei=Js9VTM2_BNyAnAeA1c28Aw&page=18&ndsp=11&ved=1t:429,r:9,s:184&tx=62&ty=27&biw=1024&bih=434 and i was wondering what you think some cool things to put in my room on my walls to make it look really cool. :)