I like using USB to charge all my devices when travelling. I use a Surface Pro as my main laptop and the default power pack that comes with it is nice and small, but unfortunately the USB port on it is next to useless as its a low power output port. So I've been investigating how to reduce the number of power packs I take with me and have just gotten myself a Satechi charger also:
75W Dual Type-C PD Travel Charger
I'm going to use this with my Surface Pro 6 using a USB-C Cable such as this:
Which leaves one more USB-C port for use on other devices, plus the USB-A ports also!
I'm combing the above with a Powerpack that is capable to producing the 45W that the Surface Pro requires also:
And to top it all off, I keep some international adapters for UK/US/Europe such as these ones. No matter which type of universal adapter I've tried, they always seem useless, and I return to simply carrying these. The good feature of these is being able to plug my charger into the smaller slots, leaving the main universal plug for other gadgets (or lending them the slot to others in lounges who can't find their own adapters!)
I can do a more detailed write-up of my setup if anyone is interested.