For me personally, I just prefer having something original. Something I made, especially funky jewelry. That's really all I can say on that. I'm a very individualistic person so I prefer individualistic things. and honestly, I usually stick to jeans and a t-shirt so I have to have something to spice up the outfit. Usually one of these pieces or a funky scarf will do it for me.
Make something! Take a jewelry making class, take up crotcheting or knitting or something funky and creative! it's always fun to tell people that you made what you're wearing :]