I am terrified of spiders (actually I am more afraid of grasshoppers-don’t ask-and heights but those things really don’t have much to do with Halloween) so this is really freaky. And incredibly easy to make.
Stuff a white stocking with cotton or stuffing to create the egg sack. Attach fake spiders to the stocking. They should just stick to the material. For an extra creepy look, have a few spiders dangle from the bottom of the egg sack by thread or floss.