Want to have the best Halloween-themed party ever? The key is in the right decorations. Here are some great ideas to spice up a Trick or Treat night! Check out 21 of the best Halloween party decoration ideas this year:

1. Skeleton Restroom Door Cover (1 Pack) by Beistle

(photo from amazon.com)

Beistle's Skeleton Restroom Door Cover (1 Pack), available in two designs and also in a pack of two, can surprise or make laughs out of anyone who is trying to make a pee in the bathroom on Halloween night!

2. Scary 3D Bat  Wall Sticker Set by HOZZQ

(photo from amazon.com)

HOZZQ's Scary 3D Bat Wall Sticker Set comes with 28 waterproof PVC bat-shaped stickers - 8 big (30cm x 7.5cm each), 8 medium (20cm x 5cm each) and 12 small (8 12cm x 3cm and 4 8cm x 2cm) stickers. Each sticker is easy to apply especially on smooth indoor walls!

3. Cobweb Fireplace Scarf by MACTING

(photo from amazon.com)

Measuring 18 inches wide and 96 inches long and featuring a spider web design, MACTING's Cobweb Fireplace Scarf can add a spooky flair to the fireplace! It can also be displayed either on the mantle, over interior doorways, or as a backdrop!

4. HANPURE Jack O' Lantern by EverPlus

(photo from amazon.com)

EverPlus' HANPURE Jack O' Lantern with its LED light and an outer shell made of 95% wax, is designed to mimic real candles without melting, making this a great energy-saving addition to the Halloween home decor list! It features electromagnetic technology that creates a realistic "flickering flame" effect.

5. Fall Decor Glass Pumpkins by JARVANIA

(photo from amazon.com)

JARVANIA Fall Pumpkin Decor, powered by two AAA batteries and available in two colors and three sizes, features safe LED lights as well as a timer for automatically turning the light on/off at set times. It comes with three replaceable preinstalled AA batteries with over 100 hours of lighting time.

6. Halloween String Light Decor Set (Pumpkin) by WHATOOK

(photo from amazon.com)

WHATOOK's Halloween String Light Decor Set (Pumpkin), powered by three AA batteries and available in six other Halloween-themed designs, is a portable and flexible 20 feet-long string light with 40 LED lights. It is also waterproof, so it can withstand frost and snow this season.

7. Maple Leaf String Light Set by MUSCCCM

(photo from amazon.com)

MUSCCCM's Maple Leaf String Lights Set, with 20 soft and silky waterproof LED leaves and featuring two lighting modes, has four different colors on each light to mimic actual maple leaves.

8. Black Feathered Small Crows Set by Prextex

(photo from amazon.com)

Prextex's Black Feathered Small Crows Set features six real-looking crows each measuring four inches tall and six inches from beak to tail feathers. With wires on each feet for placing them almost anywhere, these are sure to intimidate trick or treaters and visitors!

9. Pumpkin Night Light by Glintee

(photo from amazon.com)

Glintee's Pumpkin Night Light, with nine LED lights and integrated hanging hook holes for easy installation on walls, is great as an attention-grabbing decor for Halloween-themed birthdays or kids parties!

10. Extra Large Pumpkins Yard Sign Set by Pawliss

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Also available in a "Boo" variant, Pawliss' Extra Large Pumpkins Yard Sign Set features eight signs -- 5 pumpkin lantern, 1 skeleton, 1 ghost and 1 hand bone -- made of corrugated plastic cardboard sheets that can withstand weather, each with stakes for easy installation outdoors.

11. Assorted Size Articifial Pumpkin Set by Factory Direct Craft

(photo from amazon.com)

Factory Direct Craft's Assorted Size Artificial Pumpkin Set can add color to the lawn on a trick or treat night! The set comes with seven artificial pumpkins of different sizes, all made of foam: 1 large pumpkin, 1 medium-sized pumpkin, 3 small pumpkins and 2 gourds.

12. Scene Setters Gothic Mansion Portraits Add-On by amscan

(photo from amazon.com)

amscan's Scene Setters Gothic Mansion Portraits Add-On, made of plastic and measuring 65" x 33.5", comes with lightweight plastic sheets featuring a variety of spooky framed portraits of dead-looking people! It is great as decor for Halloween parties with a haunted house theme!

13. Fairy String Lights (Orange) by YIHONG

(photo from amazon.com)

Currently the #1 Bestseller in Amazon's Outdoor String Lights category, YIHONG's Fairy String Lights (Orange) can add needed color to Halloween night lights and the fireplace! It features a timer function along with eight lighting display modes, and can also be bent as needed.

14. Peep n' Peepers Flashing Eye Light Set

(photo from amazon.com)

Peep n' Peepers Flashing Eye Light Set can deliver a pleasant visual surprise to any trick or treater! It consists of three colorful sets of spooky eyes with 360-degree rotating eyelids and prismatic irises, and each can be attached to one another with end-to-end connectors.

15. Stretch Spider Web Set by AOSTAR

(photo from amazon.com)

AOSTAR's Stretch Spider Web Set features an ultra-stretchable and durable web made of 60 grams of artificial cotton that can cover up to 200 square feet, and includes 25 spooky spiders to compliment the web and for enhancing the Halloween atmosphere!

16. Posable Halloween Skeleton Set by Prextex

(photo from amazon.com)

Prextex's Posable Halloween Skeleton Set is a great decor to use when making the perfect horror scene! Featuring one full-body skeleton with posable joints with a hook in the skull for easy hanging, it also includes one mesh sack with two additional sets of body parts.

17. Witch Wall Sticker Set by Ivenf

(photo from amazon.com)

Ivenf's Witch Wall Sticker Set, easy to install, removable and which comes in three sheets, can cover up to 16 square feet! It comes with a free sticker set that includes 38 bat, 4 spider, 2 mice and a crow stickers, and is great for casual Halloween-themed parties!

18. Big Hairy Spider Decor by JOYIN

(photo from amazon.com)

Durable and reusable, JOYIN's Big Hairy Spider Decor is great to use as a decor both indoors and outdoors! With long black fur and red eyes, it features bendable five-foot long legs for a variety of poses; it can even complement spider web decors!

19. Halloween Zombie Decor Set by Prextex

(photo from amazon.com)

Prextex's Halloween Zombie Decor Set can scare anyone unfortunate enough to roam around the lawn! It comes with one zombie face with a 6-inch plastic stake and two 14-inch sleeve-covered zombie arms, each with yard stakes for easy installation on the ground.

20. Hanging Ghost Decor by Moon Boat

(photo from amazon.com)

Moon Boat's Hanging Ghost Decor, preassembled and made of lightweight and gauzy PVC and Polyester, can pose a huge surprise to any visitor! It can be hung anywhere outside the house whether on the veranda, porch, wall or on a tree!

21. Halloween Porch Decor Sign Set by Dazonge

(photo from amazon.com)

Dazonge's Halloween Porch Decor Sign Set comes with two signs, each made of 100% weatherproof Polyester Oxford fabric, measuring 70" x 13", and comes preassembled with a sturdy hanging ribbon and with two grommet holes at the bottom to tie it down especially when used outdoors.