Scissors are generally okay when packing a carry-on, as long as the blades are shorter than 4 inches (or 6 centimeters in some countries). Nail clippers and disposable razors will also pass muster in most parts of the world. Swiss Army knives, however, are a no-go. Snow globes are not permitted unless they’re small enough to fit inside your quart-size plastic bag with the rest of your liquids and gels.
