An unlocked phone and cash in the local currency, both sorted before I even landed. Saved me from a genuinely stressful first evening.
Thinking about the very first two days on the ground — before the SIM, before the bank, before you know where anything is. What did you have on you that saved you, and what did you wish you'd packed in your hand luggage instead of the shipping container? Trying to build a proper list for someone arriving next month.