There's plenty of places. Malaysia, Philippines, Thailand, ect
Just none in Laos.
#3 Muppet has been a member since 21/7/2010. Posts: 2
I'm sure the trekking guides at Phou Khao Kwai (about 90 km from Vientiane) could help you out, they've been living in the jungle/rainforest for years and one of my guests recently went out with them for a few days and slept in a tent, ate "jungle food" etc.
You can ring and ask Boun Sanong on 020 220 8286 (inside Laos) +856 20 220 8286 (outside Laos). He's our contact at Ban Na, the village which organises the treks. I don't know if he speaks English but I'm sure they'll be someone there who does.