Halloween is upon us, can you feel the chill in the air? UGH! We just adore this time of year and so does BuzzFeed Nifty! If you've got a fireplace, you have GOT to try this decor idea. All you're going to need is a hollow, plastic skull decoration, some fire resistant cement mix and patience! Now, you've got something to rave to the neighbors about when they're too busy talking up their holiday spirit.