Get ready for the spooky season with the Haunted Decor addon, which brings a lot of Halloween-related items into Minecraft. The addon will shower you with Jack o' Lanterns, scarecrows, skulls, gravestones, brooms, a coffin, a Wither's cauldron, balloons, and other decorative items. You can make your house so spine-chilling that even a creeper wouldn't dare to come near. The only problem I've had with the addon is that I can't move or remove placed decorations. I hope this will be resolved in future updates of this otherwise perfect addon.
Credits: Metal DGU