Barrel

Barrels are found in various places throughout Tibia. It is also the container with the biggest volume. Can be obtained by unpacking a Barrel Kit.
2 barrels can be found as daily spawns in Al's Shop, here, one in the basement of Tom's barn in Rookgaard, here and one in the building north of Billy on the premium side of Rookgaard, here. 4 can also be found in northern Thais, here.