You can use bricks to craft brick blocks and flower pots.
To make a Brick you just need Raw Clay and then have to use Furnace. Please follow the following steps to make a Brick.
In order to make a brick, the basic item that you will need to get is clay. You will have to get at least one raw clay using your shovel. You can find clays under water near the river or sea.
After that you need to use the furnace to make a brick. Go towards the furnace and add clay in the upper box and coal in the lower box to get a brick in the right-side box of the furnace in just a few seconds. Add this brick into “ready to use” stock.