That's interesting, though it's hardly true that "this guy owns just 15 things", which is what the title says. Meanwhile, fuckit, I got an actual viable list down to eleven:

1) toothbrush

2) macbook

3) phone

4-5) charger for macbook, phone USB cable

6) some ID

7) jeans (you're going commando here)

8) shoes

9) heavy shirt/sweater type thing

10) a bag

And...

(laaa - that's angels singing) Credit card.

Bon voyage! You might want to buy a coat at the airport, and deoderant.