Crochet teen patterns and projects?

Well I'm 14 but I want to crochet stuff for my almost 11 year old sister who's b-day is coming up. What should I make her? I also want some cool stuff to make for me and my friends. Any cool clothes patterns. I've already done iPod cases, cell phone cases, and stuff like that. I can do single, and double, and treble but I like a pattern not too hard and with mostly single. Thanks alot!