Here are few tips:
- organise your stuff as evenly as you can,
- put some items between clothes to not waste extra space when they're next to other items,
- use the extra space between and next to handles underneath the bottom (if present),
- if you're taking extra shoes, use extra space inside them,
- place small itemitems inside packets of your clothes,
- use external hand luggage pockets to store some narrow items,
- if you're taking any boxes (like gifts), fold the box andso the item will take less space,
- take as muchmany items you can on youyour person (they're not weighing people)
- take small heavy items from bag into your trousers/jacket pockets (e.g. cables, chargers),
- dress yourself using the heaviest clothes you're taking with you (e.g. multiple trousers, sweaters or jackets) as usually clothes take the most of space),
- handhang on your-self person any wearable items (such as cameras) - they're not extra bags,
- if items are not wearable, use strings and wear itthem hidden under your jacket,
- hold in your hands any trouble/big items (such as umbrella, laptop) - they're not bags as well,
- take an extra backpack on your arms, because:
- you can put big and heavy staff there as usually they don't check/weight the backpacks,
- when spreading out your staff between 2 bags, it's better than having one big bag with suspicious/unusual size,
- most airlines they accept small hand-bags (such as backpack), because you can put itthem under your seat,
- backpacks are less visible,
- try Apple bags (with strings), they're almost invisible in the front, so they won't ask you about something they won't see,
- if you're going with a friend, ask to do the same as above (fill their pockets with extra staff as well),
- when you're with a friend, go to the check-in desk separately looking after each otherother's bags, they won't check/weight something that they don't see,
- when going to departure gates or security clearance always choose the way with people who lookslook nice and easy, or check how they treat other passengers before moving forward (statistically usually man-woman, woman-man rule works, so if you're man - go to woman and smile nicely),
- be self-confident, walk fast, passively follow crowd, not distinguish between persons, don't exchange staff eyes (be for them another millionth boring, ordinary passenger),
- always keep your risky bags behind you and far from the staff who can think about your bag and stop you,
- if you see bad timing in the front of you, ask friend to distract staff by asking for gate number so you can bypass staff as fast as you can,
- when they ask you to measure your bag and it's too big or too heavy, repack or go to the next gate and try again,
- always remember that at security gates they're notthey don't care how big/heavy your bags are, the only risky places are at the check-in desk and departure gates.