Halloween Spider Web if a white spider makes a web above your bed, you'll have good luck. But if a black spider makes a web above your bed, you'll soon have misfortune. If you step on a spider you will cause rainy weather. Spin a web of spooky fun with our Décor Halloween Spider Web, the perfect decoration to give your space a creepy-crawly vibe. Designed with realistic web details, it’s ideal for draping over walls, furniture, doorways, or outdoor areas to create an eerie atmosphere. Lightweight, stretchable, and easy to set up, this spider web pairs perfectly with Halloween spiders and props—making your celebration hauntingly unforgettable.