Abstract: A method of selecting a virtual toy construction model, the method comprising: receiving by a host computer system a digital representation of an input toy construction model, the input toy construction model including a plurality of construction elements; generating a bill-of-materials that includes at least all construction elements of the received input construction model; performing a search in a repository of respective digital representations of a plurality of virtual toy construction models for one or more construction models that can be constructed from the set of construction elements included in the bill of materials; presenting on a client computer system at least one of the construction models identified in the search.