Reward for going to Ice Caves

Something else than the ice blocks and calcite? Not a lot. So I propose that lapiz lazuli/coal/redstone/diamonds/iron. I personally prefer coal and lapiz lazuli for this biome. A new structure could be? A way to get renewable calcite? A new material? A new enchantment on a new structure would be cool. The enchantment would make every block slippery, or that you don’t freeze that easily, even mke your sword freeze, that is cool! Thank you for anyone voting!