A container for receiving therein a liquid is provided. The container comprises an upper portion, a lower portion opposite thereto, and sidewalls extending therebetween and all defining an enclosed volume therewithin. The upper portion comprises an opening to the volume. The container further comprises a cap configured to be secured to the upper portion for closing the enclosed volume. The upper portion is configured to be connected to the lower portion. The sidewalls are associated with one or more arrangements configured to facilitate connection to sidewalls of similarly constructed containers.