Lao kip are hard to exchange outside Laos. But if you happen to be in Chiang Mai, there is a currency exchange that accepts LAK (Lao kip).
The exchange rate is not the best, but it's better than throwing your LAK away.
This tiny exchange booth is located inside the city walls, in front of Wat Pha Khao.
It takes 15km to the South is a part of Vietnam culture by a countryside to visit some local house and learn more the handicraft still working. From Conical Hat (the symbol of Vietnam women) to making Noodles (as famous by local name "Pho"), see and try how to make rice papers or try to weaving a Mat.