Sergey Balovin will realize your portrait in exchange for a beer, food, or anything more-or-less valuable (clothes,train ticket,sim cards,etc...).

Sergey is a Russian artist based in Shanghai who has been traveling around the world with his project "In kind exchange."  Since he became aware that exchanging with people was more valuable than money, he already visited more than 30 countries and realized not less than 6000 portraits on his way.

This is what Sergey needs most :

1. Food and drinks (you can take something with you or invite him for a lunch/dinner at your home, restaurant, cafe or any street food place. 
2. Local sim card (size for iPhone 5s).
3. Public transportation tickets.
4. Accommodation, the artist accepts any conditions. Just notice he travels with a girlfriend ;)
5. Train, bus, or airplane tickets to Phuket, Vientiane, Pattaya.
6. Something useful which is up to you

More infos on his website : http://balovin.ru/

https://www.youtube.com/watch?v=1psMQU_ha6s