What do you use gravel for in Minecraft?

Answer 1

Other than using gravel for building, gravel is useful to farm for flint. When you mine gravel with a shovel, there is a small chance that instead of dropping a gravel block, it will drop flint. Flint can be used in crafting recipes such as flint and steel as well as arrows

Answer 2

There aren't any recipes that use it, its only use is as a building material. you can sufficate gravel because gravity and sand too will fall if nothing is under