Spawnbound introduces a simple way to obtain Spawn Eggs directly through gameplay.
Craft Capture Orbs and throw them at mobs for a chance to capture them. On a successful capture, the targeted mob is removed and drops its corresponding Spawn Egg.
Capture chance can be configured by species, making common creatures easier to capture while rarer or more dangerous mobs require more preparation. There are also different tiers of Capture Orbs (2 for now), to provide additional options for dealing with harder targets and specific situations.
The mod is designed around a straightforward loop: find a mob -> weaken it -> capture it -> use its Spawn Egg wherever you need it.
Native optional integration is provided for The Vault and Cagerium.
Neither The Vault nor Cagerium is required to use this mod; install them only if you want the additional integration.