Patent ID: 7445113

Claim:
A stackable system for storing containers of liquid or semi-liquid substances comprising: a first tray comprising at least one protrusion extending from at least one portion of said first tray; a second tray comprising at least one receiver for receiving said at least one protrusion, said first tray and said second tray being configured such that said at least one protrusion is inserted into said at least one receiver when said first tray is stacked on top of said second tray, or when said second tray is stacked on top of said first tray; wherein said first tray and said second tray comprise at least one receptacle sized and configured for holding at least one container; wherein said first tray and said second tray comprise a display area on an outer surface thereof having marketing information displayed thereon wherein said system further comprises a plurality of containers containing a leftover liquid or semi-liquid substance, at least one of said plurality of containers comprising a cataloguing form attached thereto.