Nail scissors are now allowed. They weren't originally (after 9/11) and mine got confiscated, but some rules have changed. Have carried them back and forth on the last several flights with no issues. I read on the TSA site that they were now allowed.

I have more problems with the 1 qt ziplock handling all my toiletries in 3 oz. or smaller sizes, since I'm always taking sunscreen and other things -- that bag fills up quickly!

We also see people carrying on larger bags than the allowed sizes all the time. My carry-on is actually a little deeper than what is allowed but has never been flagged. Depends on your airline and how crowded the flight is.