S21This is my travel system now. It worked really well on two trips to the US (a week each):
Porter 30 for my main carry on.
Tomtoc sling for carrying passports and also for use at the destination:
Osprey ultralight backpack if the sling isn't big enough. This folds into a really small little ball in the main pack:
Tuck Osprey’s ultra-light Stuff Pack in the bottom of your duffel bag and you’re always prepared for a spontaneous hike or shopping excursion. Weighing in at a mere four ounces, this tiny pack boasts heavyweight features.
www.ospreyeurope.com
Osprey ultralight washbag. This has a detachable clear liquids pouch. It hangs most places when space is tight in a bathroom. It also opens out and lays flat in the main pack if needed so takes less space:
£31.50 | This smart Osprey Washbag features reflective graphic...
www.blacks.co.uk
The big trick to to just take less stuff and be prepared to wash them (in a sink if needed). So wear one pair of traousers and take a spare. Never take denim (too bulky and heavy). Take 3 or 4 tshirts, etc. Take one pair of shoes that can be worn anywhere. I take a folding manual toothbrush. I find solid soap is better than liquid because it takes less space in the liquids pouch and can be used for washing me and the clothes if needed. I am bald so I only need to take one smallish travel shaver for my face and also head (USB chargeable). It's like watching pennies to save pounds; I watch grams to save kilograms.
It's probably become a bit of an obsession now and doesn't suit everyone. Saving space and weight gets addictive