NEW YORK -- What's in your bag when you take a trip? What gadgets, tools and comfort items are essential?

The Associated Press crowdsourced that question on a Facebook thread as fodder for a holiday gift guide for travellers. We heard from folks around the world, from millennials to retirees, from frequent-flying business travellers to once-in-a-while vacationers. Here are their recommendations, plus of our favourites.

GADGETS

--A universal travel adapter that converts electric current around the world. The travel store Flight 001 has a "5-in-1" colour-coded adapter, $35.

--Portable chargers to keep devices running on the road. Anker's PowerCore 26800, $48, can charge an iPhone more than six times. For hikers and beach bums, Anker's PowerPort Solar Lite, $51, was deemed the best solar charger by The New York Times' Wirecutter product-testing company.

--The Tile, $35, to keep track of belongings. Attach the Tile to an object like keys or bags, or tuck it inside a passport case or wallet, and you can locate the item with Bluetooth and GPS technology. For outdoor gear, Tile Sport is waterproof.

--Tiny Bluetooth speakers, like the $28 Oontz , to fill a hotel room or vacation rental with music.

--Power strip or cube tap (a cube-shaped adapter with multiple outlets) to charge multiple devices in hotel rooms and airports.

--Headlamp for hiking, reading and crafting. Or the mini Lumio lamp and battery pack, which opens and closes like a book, $150.

PACKING AND LUGGAGE

--Compression storage bags so packed clothes take up less room. No vacuum needed for Roomier Life Roll-Up Space Saver Bags , $16 on Amazon: The air is expelled through an opening when they're rolled up.

--Packing cubes and ultralight nylon packing bags for organizing. Flight 001's Spacepak bags , $42 and up, have dual compartments to separate dirty and clean clothes, and also have air vents for compression.

--Hand-held scale for weighing bags.

--Colorful luggage tags.

--Luggage. For inexpensive and serviceable, Target and Costco; sturdy and sensible, L.L. Bean; stylish, upscale and durable, Tumi. For organized hipsters, the $220 Nomatic backpack/duffel bag . For day bags, Bagallini, LeSportsac and REI's $33 compressible Sea To Summit Ultra-Sil Daypack . For high-tech, Bluesmart smart luggage includes a built-in weight scale, a GPS tracking device, a battery to charge a phone and laptop, and autolock activated by cellphone.

SLEEP

--Travel pillow. The new trtl travel pillow looks like a neck wrap rather than the traditional U-shape. It supports the head and neck with a system of ribs inside a soft fleece, $30.

--Ear plugs and contoured sleep masks that don't crush eyelids and lashes.

--Bose noise-cancelling headphones : expensive at around $350, but the brand of choice for frequent flyers.

--White noise machines like LectroFan , $35.

COMFORT, HYGIENE, BEAUTY AND FITNESS

--Travel-size toiletries: toothpaste, sunscreen, deodorant, mouthwash, lotion, antibacterial wipes, hand sanitizer, lip balm, perfume, tissues. Gift a Birchbox subscription for $10 a month and the recipient will get five samples of personal care and beauty products per delivery for hair, skin and style, all in TSA-compliant sizes for carry-on liquids and gels not exceeding 3.4 ounces.

--Toiletry bag that can be hung up upon arrival.

--Tennis ball-size T Spheres , aromatherapy-massage balls, can be heated or frozen, $35.

--Soaragami armrest divider , $30. Have fun explaining it to the stranger on the plane sitting next to you in coach.

--Travel yoga mats.

--Inflatable Ten Toes stand-up paddleboard, $500 and up.

--Bike helmets that fold flat. Morpher helmets are certified safe in the United States and Canada by the Consumer Product Safety Commission, $149.

PRACTICAL AND FUN

--To make a hotel room or vacation rental homey, a flat-folding mesh laundry hamper; plastic, fold-out flower vase and 2-cup travel kettle for boiling water.

--For cocktails on the road, Flight 001 sells a $65 mini-bar kit with tiny glass bottles, metal flasks, stir spoon, funnel and recipe booklet. The vials are sized to be TSA-compliant, but remember that it's not legal to drink your own booze on an airplane.

--Rain ponchos that fold into tiny flat squares.

--Disposable underwear.

--Pashmina or cotton print scarf, for warmth, modesty or even as a picnic or beach blanket.

GIFT CARDS ETC.

--Surprise someone in a destination with a bottle of Champagne or flowers in their room, helicopter tour, dinner cruise, show tickets or attractions pass.

--Give air travel using the new Skyhour website or app. One Skyhour costs $60 and is worth an hour of flight time. Recipients can search for and book flights, just like they would on any booking site. More than 350 airlines participate.

--For Disney fans, the Gift of Disney Vacations program can pay for an experience, ticket or entire vacation at a Disney park.

--Kindle or iTunes gift card.

--Priority Pass membership for airport lounges.