After reaching Foraging Level 3 in Stardew Valley, you will unlock the crafting recipe for a Refining Equipment device known as Tappers. These are primarily used to passively collect resources from trees you find in the wild or grow on your farmstead. To make a Tapper, you will need Wood × 40 and Copper Bars × 2. By the time you unlock the Tapper recipe, you should have a decent stockpile of Wood at your disposal. Conversely, Copper Bars are made by having a Furnace smelt Copper Ore primarily acquired from The Mines or the Quarry.
Using Tappers in Stardew Valley
Once you have gathered sufficient materials in Stardew Valley, you can craft a Tapper by opening the crafting menu and selecting the device located between the Charcoal Kiln and Lightning Rod. The resources will be consumed, and you can place the Tapper on a tree of your choosing.
How to get Iridium Ore in Stardew Valley
Sourced from YouTuber Sirious Kairus and the official Stardew Valley Wiki, here is a list of trees and the resources they produce when equipped with a Tapper:
|Maple Tree||Maple Syrup||
|Oak Tree||Oak Resin||
|Pine Tree||Pine Tar||
|Mushroom Tree||Common Mushroom||
Looking to get your Tapper-produced resources even faster from your trees in Stardew Valley? Consider unlocking the end-game crafting recipe for the Heavy Tapper, which is obtained from Qi’s Walnut Room for Qi Gems × 20.
Stardew Valley is available on Nintendo Switch, PlayStation 4, Xbox One, iOS, Android, and PC.
Source: Stardew Valley Wiki | YouTube/Sirious Kairus