When you’re suiting up to board a flight, it’s easy to overpack or toss in items you think you might need—especially if it’s your first. But some things just cause more trouble than they’re worth. They could make you wait for hours or, worse, get your pass canceled. We made a list of 20 things you might want to keep out of your suitcase.

Full-size Liquids

Don’t even think about packing your full-size shampoo, lotion, or anything else. The TSA is strict about liquids, and anything over 3.4 ounces won’t make it through security. Pack smaller, travel-friendly versions or stick to solid alternatives like bars of soap and solid deodorant.

Sharp Objects (Including Nail Scissors)

Anything that could be considered sharp, like scissors, knives, or even nail clippers, will be flagged at security. They’re just not worth the risk. Store these items in checked luggage or leave them behind to avoid delays and potentially missing your flight.

Aerosol Cans

Whether it’s hairspray or deodorant, aerosols are banned in carry-on luggage if they’re not under the 3.4-ounce limit. The pressurized cans are a safety concern. Switch to solid alternatives like a solid deodorant stick or dry shampoo.

Power Banks Over 100 Wh

That portable charger you rely on might not make it through airport security if it exceeds 100 watt-hours. Always check the specs before packing your power bank. Anything bigger might get tossed, leaving you without a way to charge your phone mid-flight.

Food with Strong Odors

No one wants to sit next to someone eating a tuna sandwich or reheated curry on a flight. Avoid packing strong-smelling foods that’ll make your seatmates uncomfortable. Stick with neutral snacks like granola bars, crackers, or fruit to keep everyone happy in the cabin.

Self-Defense Items

While you might want to feel safe on your flight, self-defense items like pepper spray or a taser are not allowed in carry-on luggage. If they’re in your checked bag, make sure they’re stored properly and check airline rules to ensure they’re not flagged by security.

Large, Unnecessary Jewelry

Large, bulky jewelry isn’t just a hassle through security—it can be easy to misplace or get stolen. It’s best to leave your expensive or oversized pieces at home. Stick to simple, smaller accessories that are easy to pack and won’t slow you down through airport checks.

Illegal Substances

It’s common sense, but still, don’t try to bring such substances through security. Airport staff see it all the time, and it’s just not worth the risk. You’ll face serious consequences, so leave anything unlawful behind before heading to the airport to avoid major issues.

Heavy Books

While packing a heavy book might seem like a good way to pass the time, those big novels or coffee table books can make your bag a pain to carry and waste precious space. Try an e-reader or audiobook to lighten the load.

Expired Passports or IDs

Traveling with an expired passport or ID is a rookie mistake, but airport staff see it more often than you’d think. Always double-check your documents before the trip. Renew your passport if needed, and ensure your ID is valid so you can breeze through security.

Battery-Powered Heated Gear

Even though heated jackets might seem cozy, they don’t play well with TSA. The batteries in these items are often too large to be carried in your carry-on. Save yourself the hassle and pack them in your checked luggage, or choose a different option for warmth.

Fresh Produce and Perishable Foods

While they might seem harmless, these items spoil quickly, especially during long-haul flights or layovers. Additionally, certain destinations have strict agricultural import rules, which means customs officials could confiscate your delicious apples or exotic cheese upon arrival.

Scents That Are Too Strong

Super strong perfumes or colognes might be your signature scent, but fellow passengers do not always appreciate them. To avoid overwhelming others, keep it light. Go for smaller, travel-sized bottles, or try a scent-free option for your flight to keep things pleasant for everyone.

Fragile Souvenirs Without Proper Padding

Without proper protection, they can easily shatter during the journey. The heartbreak of opening your bag to find broken keepsakes is avoidable with a little preparation. Wrap fragile items in some bubble wrap or towels to cushion them. Better yet, carry them in your hand luggage.

Oversized Sports Equipment

Airlines typically charge high fees for transporting large items, and improper packing increases the likelihood of damage to your gear or other checked bags. Additionally, the logistics of lugging bulky equipment through airports and transfers can be exhausting.

Unmarked Pills

If you’re bringing medication, make sure it’s in its original, labeled bottle. TSA officers are trained to check for unmarked pills, which can delay your trip. Having the label ensures you’re following regulations and prevents any confusion during security screenings.

Large, Unnecessary Tools (As silly as it sounds)

Large tools like hammers or wrenches are unnecessary for most flights and will definitely not pass the TSA. If you absolutely need them, pack them in checked luggage, but avoid bringing anything too bulky. Small, portable tools might be okay, but check before you pack them.

Multiple Electronic Devices

Packing every electronic device you own might sound like a great idea, but it’s a hassle at security. The more devices you bring, the longer your screening will take. Stick to the essentials: your phone, maybe a tablet, and your charger to keep things efficient.

Wet Clothing

If you’ve got wet clothes—like a swimsuit or rain-soaked jacket—don’t stuff them into your bag. Damp clothing can lead to mold or mildew, and nobody wants that smell in their luggage. Place them in a waterproof bag or let them dry before packing them.

Unsealed Containers of Powder

Loose powders like makeup or baby powder can be flagged by TSA as a security concern. Pack them in a tightly sealed container, or opt for alternatives like solid makeup or lotion bars to avoid any issues with your carry-on baggage.