Sulfur biome mineshaft: A New Way to Get New Tools and Itoms.

I suggest adding a new underground structure called the Sulfur Mineshaft, generating specifically in Desert and Badlands biomes between Y=0 and Y=-32.

How it works:

The Ore: Sulfur Ore would be found in these mines. Mining it drops Sulfur Dust.

New Recipe: Players can craft Gunpowder by combining 1 Sulfur Dust + 1 Charcoal + 1 Sugar. This gives a mining-based alternative to Creeper farms.

Environmental Hazard (Toxic Gas): To make exploration challenging, these mines contain "Sulfur Pockets" that release yellow toxic gas. If a player stays in it too long, they receive Nausea and Poison effects.

New Equipment - Copper Gas Mask: This can be crafted using Copper Ingots and Glass Panes. Wearing it protects the player from the toxic fumes, giving Copper a much-needed practical use.

Volatile Mining: Using a Torch or Flint and Steel near Sulfur Ore has a 5% chance of causing a small "Fire Puff" explosion. Players are encouraged to use Glow Berries, Soul Torches, or Night Vision for light.