I like bobby pins w/ rhinestones or a little bauble. They're not so blingy that they compete w/ my jewelry.
I often put my hair in 2 little messy buns (no, not Princess Leia), and I'll stick a little comb in them or use a cute band.
I like a lot of the headbands w/ flowers that are fabric or a cluster of gems.
look at all these cool ones at forever21, awesome prices:
http://www.forever21.com/category.asp?catalog_name=FOREVER21&category_name=acc_hat_hairgoods&page=all&pgCount=25
I love the mini top hats too. They're just so cute, but not everyone can pull that off.
I have the zipper flower headband (attached)
Look at this feather one I saw (attached)... $75! Ummm... no comment.