So i thought that gravel is actually no use and wanted to think of something to make it come in handy. I came up with the idea of making concrete of it. Mixing sand gravel and water will make the mixture...see below...
After creating the mixture u can put it in the furnace and it will give u 4 concrete blocks and it will also give u back your bucket(empty)
After creating the mixture u can put it in the furnace and it will give u 4 concrete blocks and it will also give u back your bucket(empty)