A modular beverage can interlocking device which is adapted for forming a plurality of conventional beverage cans into a building block for use as a toy or in display applications. The device generally comprises a plurality of ring-shaped members, each having an upper and lower orifice which is optimally contoured to hold the lower and upper end of a conventional beverage can respectively via at least a snug friction-fit. Preferably, the lower orifice has an inwardly facing annular slot for releasable retention of the upper lip of a conventional can via a snap-fit, and most preferably, has multiple inwardly facing annular slots of varying diameter in order to provide a snap-fit for cans of varying outer dimensions. Optional designs are provided which enable the use of thermoplastic materials having a wide range of hardnesses as well as end-cap means which provide for rigid securement to any generally flat surface.