I almost didn't watch this because, as a 76 year old world traveller, I thought, "What can these young people teach me that I don't already know?" I'm glad I did because I was wrong! Although most of what you covered I did already know, I did learn a few new ones. I am now looking forward to reading the wonderful guide that you have prepared. Thanks for doing this!
Excited to hear how you enjoy the cubes! We have found that the best travel towels are any microfiber beach towel. There are plenty of options on Amazon. We have found these are the lightest and fastest drying towel to travel with.
Just buy everything at your destination then toss it when you leave. That's how I travel with barely anything, just my work and personal laptop and that's it.