If it's been a couple of years since you last looked at what's going on with chargers for all these devices that you're toting with you on your trips, this winter is high time to take a gander --
the newer chargers are using a different material, gallium nitride (GaN), and the behind-the-scenes scuttlebutt among electrical standards officials is that the current limits on how much juice can go through a USB-C port are going to be increased.
You can right now get GaN chargers with 3 or even 4 ports that are smaller than the charger that came with your laptop and can either charge the battery in half the time or charge three things overnight, all for less than a standard Apple charger.
(These are 66W or 65W; there are bigger ones around 100W that are starting to come down in price, and if you're just using a phone or tablet, there are 20W choices that are no bigger than the plug.) Several of these include the USA, British, and European plug adapters. This is an easy way to reduce some of the clutter in your carry-on.