Lost Pencil charger

If it’s Apple Pencil 1, you can plug it into any Lightning port on any iPad, iPhone, etc.

If its Apple Pencil 2, it charges wirelessly by attaching it to iPad Pro.

https://support.apple.com/en-us/HT205236

Look at a local electronic’s type store.

If you’re in a hotel perhaps the concierge can recommend a store. Or if you google Apple Pencil charger maybe a local result will come up