Nail clippers: Keep those nails trimmed, especially if you have a cat that likes to climb or a dog that jumps on houseguests.

CNN: Pet grooming tools for a less hairy summer

In 2005, the TSA changed its policies to allow passengers to carry on airplanes small scissors, knitting needles, tweezers, nail clippers and up to four books of matches.

NPR: TSA To Allow Small Knives, Bats, Clubs On Planes

Small knives were banned along with a host of other undersized sharp objects, like nail clippers, screwdrivers and cosmetic scissors, after the September 11, 2001, terrorist attacks on the United States.

CNN: U.S. to keep restriction on small knives on planes for now