Creeper Drops gives Creepers two new items to drop in the game: skin and meat. The meat can be cooked in a furnace and eaten, giving you a new food source. This is especially helpful early on when food may be scarce but Creepers plentiful.
They will also drop skin that can be crafted into a new creeper armor set. The armor is pretty strong too so it’s also very helpful if you’re ever in a bind and need relatively easy to obtain materials.