This was easy and cheap enough I may make another one or two for the house. Basically its some 1/2 inch PVC pipe that I made the "bones" of it, then put weed barrier fabric over that, then a couple cans of spray foam and then paint. The legs are wrapped in black burlap I had leftover from a project years ago (I do tend to keep things I think I might use in the future). Eyes are plastic christmas ornaments I sanded the outer color off of and wiped with a little red paint on a paper towel. Lights are chistmas lights I stuffed in the eyes and ran around under the belly. The belly lights were red but I spritzed them with a little blue and purple spray paint and they are purple-ish light to the naked eye. The whole spider probably weighs 40 pounds +/- 5 lbs., so hanging and securing to the house was not an issue. So far it has stood up to rain twice and a windy day once with no issues. The head and legs all detach from one another as they are held by a screw that runs through the pipe where it is joined together, so I can dismantle it and store it in the attic for next year.
Now I have to find scraps of stuff to cobble together for Christmas, as my neighborhood has expectations of what I will do now.....