I have been on a trip where I had to travel by train for a long distance. That is the perfect time to stitch but not anything that requires lots of packing (beads, ribbons, scissors, pins, bobbins of thread, needles....).
With only a hoop, a needle and pre-cut strands of thread, I worked on a Chicken Scratch embroidery I started earlier in the year. I manage to do about half of this during this trip (heavy rain made it impossible to enjoy the view from the train window so work was easy):
Excuse the awful colours; I took the photographs under electric light.
I have also added a small wheel to the crazy quilt block: