I carry a cheap Chromebook. I save my files to a flash drive when I need to, or upload. Nothing stays on the hardware for long. Then I just leave it in my locked bag in the care of a hotel/hostel when I'm going on a sidetrip. No data to steal and an inexpensive piece of hardware.

If you're really paranoid you can powerwash the Chromebook before you leave it, but I think that's overkill. Still, that's a lot easier than backing up everything on a Windows laptop.