I'm currently using an old charger like this: 
It's great. Easy to carry with me, uses a two-pin cable so I can easily buy a cheap 2 dollar cable in the country I'm traveling. It's light, and I use a few short (30cm) cables to charge my laptop, phone and other stuff.
I would like to get another one, but it seems like they are no longer sold from the original manufacturer.
I'm searching around online, but the only alternatives I find seem to be very bulky and not easily carried with you. Or they are wall chargers, which is very inconvenient, needing 4 long cables to reach your devices, and often taking up multiple plugs because they are so bulky.
Anybody that knows if these are still sold anywhere? This one is 65W, but with GaN tech, I expected to see more of these compact chargers with the same weight and thickness outputting maybe 100W. But I can't find anything
I've bought similar things on aliexpress.
Search "gan charger".
Plenty of good gan chargers indeed. But nothing really like this. A compact, flat desktop charger with replaceable wire for use in any country.
Searching for a 'desktop charger', shows somewhat closer results, but mostly very bulky for charging 10+ devices at the same time. Nothing really portable.
I have a little one I use on my bedside, but it's compact enough to take travelling.
From memory the brand is Tooki or Toocki.