I was mulling over all of my options for laptop cases a few weeks ago. My laptop will be going into my Aquaquest rolltop drybag, so keeping it dry should not be an issue. It will be bouncing around on the back of the bike though, so padding seemed important. Like most days these days, an Amazon shipment arrived. As soon as I saw it at the front door it gave me an idea.
I don't remember what came in the package, but after opening it I grabbed a pair of scissors and some Gorilla Tape. Five minutes later I had a custom fit laptop pouch. It's not pretty, but I really don't care. As you may have noticed I am sort of on the anti-pretty philosophy for this trip. Pretty things are more likely to get ripped off.