The first time I went to Europe, I packed four different plug adapters — one for each country I was visiting. It was annoying to keep track of, took up too much space in my carry-on, and I still ended up plugging the wrong one in more than once.
When I went back, I got smart and bought this $20 universal travel adapter — and now I’ll never use anything else. It has virtually every plug you’ll need, plus four USB ports and one USB-C port, which means I can charge my phone, AirPods, Kindle and portable charger all at once.
As someone whose personal nightmare is having a dead phone in a foreign country, this thing is non-negotiable in my travel bag.