This is how you make your own:
you will need:
black cardboard or paper
1: find a spinders web, preferably a place where you can easily put a piece of cardboard behind it.
Check web for spiders before you begin - only use webs where there is no spider.
2: spray the web with hair spray
3: spray on talc and then spray with hairspray again.
4: place the carton behind the web, so it caught on the carton. Cut or tear gently the ends and let it stick to the carton. put it to dry.