You cannot bring crowbars, axes, or hammers (unless they’re tiny and meant for breaking glass in an emergency, which is oddly specific). Also banned: ice picks, snow shovels, and drill bits.
But you can bring a corkscrew! Because nothing says “I’m ready for a mid-flight riot” like a spiral of metal designed to stab into cork. The TSA’s logic is that Corkscrew = Wine Drinkers = Peaceful Vibes. I don’t make the rules.
Don’t even think about bringing a Swiss Army knife with a blade longer than 2.36 inches. That’s a very specific measurement, which means someone definitely tried it.