Hammock is the way to go in the Malaysian jungle
I have always been a firm believer that a lightweight hammock & a reliable flysheet is the best way to sleeping shelter in the jungle. Hammocks keeps you off the ground, easy to set-up and is probably the one shelter with the least impact on the natural environment.
If you are looking for a hammock to use in the jungle, try browsing Outdoor Gear Malaysia. Together we some friends, we have set-up this online gear store to provide an affordable and (more importantly) practical range of outdoor gear.