Everyone has some kind of spider at Halloween, so I thought I should make a really big spider... it was all down hill from there, and it just seemed to get bigger and bigger... anyway, now we have a Giant Spider on our front lawn because it was too big for the porch. I have to say it turned out pretty well.
The legs are 1" Pvc Pipe with Foam Pipe insulation on the upper parts to give it some dimension, the Cephalothorax (head part) is a styrofoam cooler that I shaped a little bit, and the spiders butt is a large exercise ball. I covered it all with "Great Stuff" which is expanding insulation foam in a can, and then painted it.