The hat is pure green stuff. I first formed the body of the hat with green stuff. It was originally supposed to be a mad hatter type hat, but I didn't like the look so I trimed it down with a hobby knife. I then formed the brim. This I had to trim as well. Its not the most refined sculpting tecnique, but it gets the job done.
The bowler was done in the same way. Although I didnt have to trim the gree stuff.
The spiders contain about 50p worth of materials. The hardes part were the legs.
-Joe