I have done many toy design and scale model on Solidworks alonge with Jigs and Fixture Design. You can view all my industrial work on http//www.box.net/mechdesign , https//www.facebook.com/MechanicalDesignAndDraftingServices . Toy designing is art and you need to imagine many things . Praportion is more imprtant. Many 2D drawing are available for aircraft, ship, car etc, you need to understand and convert it to 3D. It is most easy and effective way to entertain yourself. No need to see your age , profession , income group etc. Need to be kid while you imaine your creation.