The Aeropress + a Hario Mini Mill works well for a travel setup (or just everyday individual use).
I’ll second the Aeropress. The main reason I started using it was to make small amounts of coffee with minimal waste and fuss to test my home roast batches. I found out you can make coffee an infinite number of ways with the Aeropress to suit any coffee and any roast.
The most time consuming thing with the Aeropress is boiling water. By the time the water comes to a boil, I have the coffee ground and ready to go. Cleanup takes a few seconds.
No reason to use instant, none. I don’t have to compromise with the Aeropress.
I use it at home and on the road.