Patent ID: 8720153

Claim:
A frusto-conical structure kit comprising: a planar base sheet having a top edge and a left end; one or more intermediate planar sheets, each intermediate sheet having a left end, a right end, a top edge, and a bottom edge such that: for each given sheet in the kit except the base sheet, the right end of the given sheet is as long as the left end of a corresponding sheet in the kit, and the bottom edge of the given sheet is as long as the top edge of the corresponding sheet; wherein the planar sheets are dimensioned such that joining, along lengths of corresponding edges: the right end of each intermediate sheet with the left end of its corresponding sheet; and the bottom edge of each intermediate sheet with the top edge of its corresponding sheet; produces a substantially frusto-conical structure; and a planar top sheet having a bottom edge and a right end, the top sheet being dimensioned such that joining the bottom edge of the top sheet to the top edge of a last intermediate sheet, and joining the right end of the top sheet to the left end of the last intermediate sheet, produces a frusto-conical structure.