When a took a new job that required me to travel for training it was either buy a Chromebook or make something myself. So I took the obvious path!
Made up of an Atomic Pi with off the shelf parts easily found at your local Amazon this whole thing fit together fairly well with some wood screw and 3D printed supports.
It could still use some upgrades, as could any Cyberdeck over time, but it survived the TSA, carry on under the seat, and a 2700 mile car ride across the US with only minor structural damage.
The bonus part being that the case is 100% sealed and intact so it is, in fact, waterproof!