Reihook: For Sons Of ....3

Using complex mods like ReiHook can cause lag or game crashes, especially when spawning large quantities of items.

If you prefer not to use third-party software, the game has a built-in developer console: ReiHook for Sons of the Forest v1.3 - UnKnoWnCheaTs

While developers generally allow cheats in single-player, using them on private servers without permission can lead to being banned by the host.