Another favorite of mine for this Spring/Summer are colorful ear pins.
These earrings give you the look of multiple earrings without the commitment. Slip the bobby-pin like end of the earring into your pierced lobe and slide it through along the back of the lobe. You have the uniqueness of a fun earring that can make any outfit pop.
I bought these at a craft fair, but they can be found at boutiques and online at Etsy.com.