Making a non-flight 4 blade propeller is quite easy with a pair of wood propellers. Take a counterbore that is the same size as the hub  of the propellers and counterbore The front of one prop, and the back of the other prop. then just glue them back together at 90 degrees. You could make any multi bladed prop the same way with a few propellers. counterboring the hub to get them to mate together. As far as doing the spinner your on your own.