>>2830800 (OP)rainforest where? theres quite a few different types.
hammock is absolutely necessary. keeps you away from mud/water, thorns, crawlies, tree roots and uneven ground. get one with integrated mosquito netting. when swarmed by mosquitos, theres nothing better than being able to hide out in your hammock and reliably keep all of them out.
machete to cut a path.
high, watertight boots. can be simple rubberboots or something more fancy. especially important if theres venomous sneks.
waterproof headlamp with spare batteries.
waterproof bag for stuff you dont want to get wet.
long sleeve, fast drying shirts and pants. you might just need to dry out your clothes with body heat.
compass and good topo map. dont rely on your phone only. very easy to lose direction, especially in a flat landscape.
if you want fire, its often hard to impossible to find any wood thats dry. take some candles, cut a little piece and light it. stack small twigs on top of the flame. they will slowly dry out and light eventually.
waterfilter
fishing line & hooks