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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.

Yes. Condoms are allowed in carry-on bags; keep liquid lubricant in 3.4-oz (100 mL) containers inside your quart-size 3-1-1 bag.

Yes—unused COVID-19 home test kits may go in hand luggage; keep liquids ≤100 ml and carry any lithium batteries in the cabin.

Yes, TSA allows cookie cutters in carry-on and checked bags; avoid sharp edges and pack them neatly to speed screening.

Yes, copper wire is allowed in carry-on and checked bags, but pack coils neatly and expect extra screening; cutters over 7″ go in checked bags.