Rewireable USB Travelplugs. That’s what you want to read about. Oh yes my friend.
2tech are selling these things for £20.99 and it’s basically a chunky plug with dual USB outputs and four power outlets. Imagine one of those triple adapters but with another outlet and another couple of USB ports.
Whack that into your wall and, to quote Jeremy “Where’s my steak” Clarkson, you will have “POWWERRRRR!!!!!”
Stick one of these into your suitcase and you’re away my son. No need to worry because, as it has all those weird and wonderful plugs for the various countries, you stick it in the wall and get proper local sockets presented to you. Ha. Win.