Carry-on luggage rules: Surprising things you can't take onboard
Everyone knows the items you can and can't bring onboard international flights.
Toy guns, knives and big bottles of shampoo are all obvious no-nos.
But there are some items that are prohibited from being brought onboard planes that you might never have considered.
Read through for our list.
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Slime
Jars and buckets of slime might be a big hit with your kids, but check the volume before you head to the airport.
It's technically a gel, so you'll only be able to carry a maximum of 100g of slime in your carry-on. Pack it in your checked luggage to be safe.
In fact, a UK airport had to issue a warning to parents that slime would be confiscated it it was over 100g.
Vegemite
You may have promised your overseas relatives that you'd bring them a jar of Australia's favourite spread, but unfortunately, it's counted as a liquid.
So pick up a jar that's under 100g, or pack it in your checked bag.
Sleeping aids
Inflatable sleeping devices for toddlers are a sneaky trick used by parents to help get their kids comfy on a plane.
However, many of these sleeping aids - including inflatable cubes, 'bed boxes', and leg hammocks, are banned from planes for health and safety reasons.
Snow globes
While snow globes may be a perfect souvenir, they'll have to be packed in your checked bag.
Even if the liquid inside the globe is less than 100mL, security has no way to verify that so they'll often confiscate them.
Jam and honey
If you've picked up honey or jam from a cute market stall on your travels, be sure to pack it safely in your checked luggage, or it could be confiscated by security.
Bath salts
A nice jar of bath salts from a lavender farm you visited on holiday may make a good gift, but it's technically classed as a powder.
This means that any salt you bring on board has to be in a jar or packet that weighs less than 350g.
Pure Epsom salts are considered an organic powder so are fine to bring on board.
Batteries
You can have batteries in your carry-on luggage, but some airlines will limit the number to 20.
It sounds like a lot, but if you've bought a value pack of AAs to include in a kids' Christmas present, keep them in your checked bag.
Ice packs
You might get away with bringing through an ice pack if it's completely frozen solid. But as it's made of a gel, you won't be able to take it onboard.
Peanut butter
If you love your peanut butter so much that you refuse to fly without it, just make sure your jar is under 100g or it's in your suitcase.
