Funny you post this, I was searching for them today. I found some at CompUSA. They had the Antec ones that were like $5 for a half dozen or so. Being the cheapo that I am, I went for the Curtis ones that had them in black metal and clear plastic in the same pack (about 4-5 of each) for $3. The antec ones were a bit bigger, but the Curtis ones serve my purpose just fine.