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Yes — AA alkaline and NiMH batteries are allowed in carry-on and checked, but spare lithium AA cells must go in carry-on only; protect terminals.

Yes—duty-free liquor can fly in carry-on when sealed to security rules, or in checked bags within ABV limits and airline quantity caps.

Yes, egg tarts can go in carry-on or checked bags, but follow security rules and entry bans on dairy at your destination.

Yes—candy gummies are allowed; no—THC edibles aren’t on U.S. flights, and CBD gummies must meet hemp rules.

Yes, disposable air-activated hand warmers are allowed in carry-on and checked bags; fuel-based warmers aren’t permitted.

Yes — disposable vapes go in carry-on only; keep them off, protected from activation, and never use or charge on the plane.

Yes, donuts are allowed in both carry-on and checked bags in the U.S.; only liquid-like fillings or toppings must follow TSA’s 3-1-1 rule for gels.

Yes, airlines allow pet cremains in carry-on if the container clears X-ray; check your carrier’s rules and use a non-metal urn.

Yes — contact lens solution can go in your carry-on: up to 3.4 oz in the 3-1-1 bag, or larger if declared as a medically necessary liquid.

Yes, diapers are allowed in carry-on and checked bags, and baby liquids get special screening under TSA rules for traveling with children.