For alpha release:

• All included items should have some in-inventory appearance.
• Where applicable, 3D models should be applied to items.
• All armor needs both in-inventory textures, as well as textures & models for when equipped on entities.
• Models and textures are needed for any included mobs.
• Textures, and - where applicable - models are needed for all blocks.
• Most projectiles require textures.

Note: Do not mark this one as complete until everything else is ready, to make sure we get everything.