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
Anker makes other ones.
CONTENT WARNING: AMAZON
https://a.co/d/2fMDBkS
https://a.co/d/afFmQ5r
These look like good chargers, but not really practical for tossing in your bag and bringing along. They also seem to use an attached wire or proprietary wire. Which makes it difficult to swap out for a different length or for another country.
Thanks for searching around though!