Resources are items obtained by the player to enhance and attune their gear. This page lists all resources that you can obtain in Attune.
Resources are stored separately from items and have unlimited slots, but take up a limited weight limit.
oak pine palm willow jungle petrified ash
all wood drops lumber (besides petrified and ash)
some trees drop a special resource
oak: apple
palm: coconut
willow: willow bark
jungle: mango
petrified: petrified wood
ash: wood ash