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Yes—liquid medicine is allowed in carry-ons in reasonable amounts; tell security and separate it from your 3-1-1 liquids.

Yes, you can bring liquid milk on a plane; carry-on follows 3-1-1 unless it’s for an infant or toddler, which may travel in larger declared amounts.

Yes, you can bring an instrument on a plane when it fits in cabin stowage or you buy a seat; oversized pieces may travel checked in a sturdy case.

Yes. Knives can go in checked luggage, not carry-ons; sheath or wrap blades, and follow airline and destination laws on possession.

Yes, you can bring liquid in carry-on if each container is 3.4 oz/100 ml or less and all fit in one quart-size bag; medical and baby items are exempt.

Yes, you can bring liquids in a carry-on if each bottle is 3.4 oz (100 ml) or less and all containers fit inside one quart-size clear zip-top bag.

Yes, you can bring liquids in carry-on bags if each container is 3.4 oz/100 ml or less and all fit in a single quart-size, clear, zip-top bag.

Yes, whole lemons are allowed in carry-on on U.S. domestic flights; rules change for liquids and for quarantine zones or border control.

Yes, LEGO is allowed in carry-on bags; watch out for toy gun look-alikes, liquid glue limits, and spare lithium batteries.

Yes, laptops are allowed in hand carry; keep them accessible for screening and keep spare batteries and power banks in carry-on only.