Bodily coverage : long sleeves, caps, socks, shoes (Preferably rubber ones) are also needed. Forest trekking sometimes meet with wetlands. The rubber shoes are instantly dried.
Personal neecessities should be provided, such as ointment balm, calamine, body power and tissues, Mosquito-repell-ents, (villagers use only one big knife for all multi-purposes) for and also matches (Either smokers or not).
Cooking vtensils: Field pot, water thermos, etc are necessary, but villagers like to have plastic bottles instead.
Sleeping is essential. You can take with you tent, hammock, and sleeping bag. Villagers prefer plastic sheets as mats for sleeping in cave and around camp fire. Somtimes mosquito-net is necessarily needed, up to circumstances. You can tie your hammock between two trees then sleep happily.
Flashlight torch should be personally provided for forest trekking at night. Candles are also needed especially bugs repellant one is preferred. Please don't forget reserved bulbs and unit cells.
About backpack, villagers use bags covered with bathing clothes-more economical. Note that two big plastic sheets are useful to keep dry and wet clothes.