I hot glued the dryer vent into the appropriate shape and spray painted it orange. When it dried, I added all the stuff in the center. That was it! I didn't permanently put the stuff in the middle (I didn't want to fight hot glue if I decided to rearrange things), but I'll probably go back and do that soon. I like it!
The inspiration for this pumpkin came from the blog A Diamond in the Stuff .
I'm really pleased with how this turned out!