Putting delicate computer parts with clothes as carry on in airport? [duplicate]

I will answer one part of the question because I have a lot of experience with flying with monitors. It's not easy. Monitors are fragile and you want them big and the airlines don't want you to carry big things around and don't care about fragile. This post will be full of product endorsement but I do not link them, Google is your friend. This is the result of years of research, most of the products mentioned in here are totally one of a kind.

I found two good solutions: a 23" monitor fits well in the Geargrip GGLCD2WK1 shield then put my pillow in a hardshell suitcase lay down the shielded monitor on it and check the whole thing in. The AOC E2351F is extremely well suited for this purpose because it's extremely thin and it has a light weight stand which packs flat. Neat.

There are USB powered, Displaylink monitors of various sizes, 15, 16, even 22", I don't care about those. The Gechic 2501H stands out because it's 15" and full HD and has HDMI and VGA inputs but 15" is not a lot.

In general, carrying on a full HD monitor is very tricky because the longest edge of the common carry on size is shorter than most full HD monitors. You can try to get away with the shielded AOC as described above in a rolltop backpack. I did, it's not a good experience. My current solution is a Sharp LL-201A but any other similar vaguely 20-ish display tablet monitor will do. Normal monitors at this size are 1440x900 but some of these tablet monitors are properly full HD. The next hurdle: it's very hard to find a reasonably priced lightweight VESA stand which allows lifting the monitor off the table, AFAIK the only solution is the K&M 23150 VESA adapter and the K&M 19685 tripod. Another problem is the extreme cost of these touch monitors. Currently my choice of backpack is the Magma DIGI Control-Backpack XL because it is padded up the wazoo and the internal laptop pocket is so huge the 20" monitor fits and the outside pocket where ordinarily the backpack strips would hide is perfectly usable as a pocket for the laptop itself. It's padded too (although it lacks bottom padding which is annoying, I am adding some velcro so that the laptop doesn't fall to the bottom.).

This backpack is 510mm inside which is enough -- even if barely so -- for a very narrow bezel 22" monitor. So I have a HP L2201x in the mail, I even have an idea of how to VESA mount it, I will report back if it succeeds. It's going to be a tight fit. Like the AOC, this needs an external power brick but I like separating the weight if it creates monitors as thin as these two. Edit: nope the L2201x is too big. But, I like it more than the E2351F and if you grab a pair of VESA 100-200mm rails like the FPMA-VESA120 and glue (two part epoxy or liquid weld) one of them lengthwise such that it hangs about half off the monitor and put the other as close to the hinge as possible then you can use the K&M mount with it which creates a really neat solution.

As for scanning, I never needed to take out my monitor from the backpack. I suspect it has something to do with no batteries inside.

Edit: the VESA stand for the YiyNova Tablet is available separately and it's a good travel stand. Alternatively, there's the Bexin M225S tripod which might be a better fit than the K&M tripod because the latter does not spread wide enough to keep the monitor stable.