Similarly, I bought some adapters that I carry around. I travel between a couple of locations, and I bring just one charging wall plug, and one 10-foot USB-C cable.
I have adapters that convert the usb-c to micro and lightning, to also charge my airpods, flashlight, etc. Each adapter is about 3/4" (2cm), female USB-C end, and male end of lightning/micro. I've glued them together so that it's just one little thing to take.
I hated carrying around 3+ cables, so this has been a welcome change.
It's true that I can only charge one thing at a time, but that's not an issue for me except in rare circumstances.