An erector set for creating artistic structural designs comprising: a base and a set of modular structural elements connectable to one another, said modular structural elements comprising stiff, arcuate members having v-shaped slots in the convex and/or in the concave surfaces thereof and having either a v-shaped slot or a taper on each of the end portions thereof, said tapered end portions being configured to mate with and be held within any of the said v-shaped slots in said convex or concave surfaces or in end portions of the said arcuate members.