I did this for a Custom Toy show in NYC which happened last Friday (25th). It started out as this (see pic below) which is a vinyl toy made by Kano.
If your not familiar with Toy Custom shows, the artist sends out his toy to other artists, then they customize it and send it back to be in a show.
And after a few kit parts and styrene and weathering here is the final piece
The base was made from a cigar box and styrene.