A basha (rain shelter), mosquito net and hammock are the established way of sleeping in the rain forest and these can be purchased individually or as a single unit. The need for a sleeping bag will be dictated by altitude and the difference between day and night time temperatures. The Variant 3 is highly recommended and the least you should take is a liner for hygiene. Tents may be considered dependent on terrain and temperature. On larger expeditions a medical or admin tent is a good idea.