Safe Campfire (prevents monster spawns)

Campfires placed by players will prevent aggressive mob spawns in a 45 block radius. Break the campfire to remove the effect. This mod/plugin relies on existing in-game logic for suppressing natural spawns and spawn markers.

I find it helpful for creating safe zones around farms and to "claim" prefabs after I've killed the skellies. I also prefer temporarily blocking spawns rather than deleting them, like I've seen some mention by destroying blocks under each individual marker (tbh haven't tried it, just doesn't sound fun to me).