I carry this:


It is powerful enough to power most laptops that use USB-C, it gives me three USB-C ports (but note one of them is 20w) and I can snap on the head for most countries rather than use a separate plug converter which gives me a better fit in the outlet, less wiggle room, etc. The four plugs let me charge my iPhone, iPad, and Apple watch. As the world is moving away from USB-A one USB-A is enough. It ships with plugs for the US/JP, UK, EU, and China/Australia. I'm only hitting the major users of these plugs. In the next twenty-four months of travel that I know of, I'll only need to carry a plug converter for South Africa. India is the other major non-supported country.