The drums are a common product of the native craftsmanship.
A set of drums can also be played (by left-clicking in the inventory bar) once every 10 days. Doing so will slightly replenish the sanity of the expedition (by +10 points) and adds an aggro chance of +30% for 15 days.
Multple drums share coldown ticks, meaning that only the cooldown of one of them will tick down when a day pass. When the first is of cooldown the second will start ticking down. Tuned drums and drums are on different cooldowns.
The drums can be acquired by:
- bartering with natives at a village.
- bartering with shamans at a shaman's hut.
- found among the loot at a stone statue.
Tuned drums are an improved version of drums.