A modular container is formed of a casing, a seat ring, a rotary cover, and a base. The casing is provided with a plurality of retaining holes and retaining projections. The seat ring is located in the top of a cylindrical object which is formed by the casing. The base if disposed at the bottom of the...http://www.google.sh/patents/US20020084273?utm_source=gb-gplus-sharePatent US20020084273 - DO-IT-YOURSELF MODULAR ARTICLE-HOLDING CONTAINER
