Brushing Normal Sand and Gravel

You can brush normal sand and gravel with a brush and it gives “junk items” such as flint or a 5% chance of getting an iron nugget from gravel. For sand you could get a nautilus shell, gunpowder, or a 5% chance of getting a gold nugget. You can also brush at dirt to get rotten flesh, string, a spider eye, bonemeal, or a 5% chance of getting an iron or gold nugget. If the block has been broken or already brushed it can not be brushed again.