Packing 101
No matter how long you're traveling, always PACK LIGHT! Pack what you think you need then cut it in HALF.
If you're trip is less than 3 months you should be able to manage with just carry-ons; a wheeled case, small enough for the overhead bin and a good size backpack are plenty. If you'll be gone longer, or you need clothes for more than one season (and possibly items that can’t be carried on due to flight rules), you may also need a checked bag. But even then, GO SMALL.​
My checked bag is actually small enough to be a carry-on. Many airlines, especially those going to remote places on smaller planes, have strict weight limits on checked luggage and remember, you may be carrying ALL your luggage through public transport and down city streets. (That sh*t gets heavy fast climbing up metro steps!) Wheels on luggage are a must. If you have to go up to three bags, one should be on your back and the other two should be stackable if at all possible (they don't necessarily have to be designed for that, but you should be able to find a way to secure the smaller bag onto the wheelie handle of the larger if needed so you still have one hand free for your phone/ directions while pulling the bags.)
10 Travel Gadgets/ Gear Worth the Space to Pack

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Some Tricks I've Picked Up...
Plan on repeating core outfits - Layers are key, and avoid bulky items.
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Don't bring an option for every possible occasion - just bring one 'special occasion' option that can be dressed up if needed, but can still act as part of your day to day wear.
Skip the pajama’s entirely - sleep in Tee’s and an athletic short or sweat pant that can also be worn in public.
Shoes are a challenge, they take up enormous amounts of space! Try get away with just one pair that is comfortable for walking but low profile enough that you can wear it with something dressy. (And they will be on your feet so won't take up any luggage space!)
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If you do pack a second pair, don't waste valuable packing space! Roll up a T-shirt or socks and tuck them inside.​
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Use vacuum bags for any necessary bulky items. They come in lots of bag sizes and the vacuum is small and rechargeable. (I went to the arctic with just carry ons - my giant snow pants squished down flat in a vacuum bag so they didn't take up any real space!.)
Be aware of cultural & religious dress norms for your destination and include culturally appropriate clothes.
Including a scarf to convert a sleeveless top to an appropriate outfit when necessary is a good option. (And it doubles as a night/ chilly weather option that takes up less space that a coat)
Ditch the purse. It takes up space and is an easy a target for pickpockets. I use just a flat card wallet or coin purse. ​​​​
Hot Tip - a Cellphone Lanyard is so useful! You won’t have to dig in pockets or a bag just to check Google maps. (And it's perfect for days you're wearing something pocketless.)

