Provided herewith is a system for assembling a temporary structure using a plurality of separate members. A first member has ends at opposite sides of an elongated body portion, with notches on the top and bottom sides of each end. A second member has ends with notches formed on opposite between the ends. These notches enable the first and second members to engage with other such separate members. A third member has a triangular shape that functions as a roof truss with opposing sloped surfaces and an underside. A pair of truss notches is formed at positions corresponding to the notches of the first member, for each engaging with one of the plurality of separate members. The third member also includes feature hooks, formed on the sloped surfaces, for engaging with a fourth member defined by a planar roofing material having a plurality of holes.