I would love to purchase a travel-worthy 9x9 to use on a road-trip. If anyone has such a thing, please let me know.

Or if you can or have made one, I have cash.

I'd buy the cheap 19x19 "giant fridge magnet", to get the magnetic stones. I'd then print myself a 9x9 board on a sheet of paper and play on any metallic booksize item I could find. You may not have book-sized metallic things around, though.