I ADORE this hairpin (although the packaging calls it a clip lol)

It's not overly embellished either, and I have issues with my hair getting caught on some sticks.

http://www.amazon.com/Conair-Ultimate-Updo-Clip-Lightweight/dp/B004OV2EIM

Very lightweight, and holds all day!

I actually just bought a set of 3 off of ebay for pretty cheap. Only linked Amazon because eBay sales can change lol