Over the years I have tried most of the options for shaving.
I started with mains powered electric shavers . . . but too heavy.
Next it was battery electric . . . . but the battery always went flat at the wrong time.
Next was wet shaving with foam . . . . but the foam is expensive and after 9/11 you could only take the tiny and expensive foam canisters.
Its just a BIC 3 bladed disposable razor and a shaving brush.
I also have half the blade container to protect the blades, and a plastic bag for the shaving brush.
I don’t need soap as I just use the hotel soap, or shampoo.
The whole kit costs around $10 . . . so it gets left behind it’s no problem!