Halloween is one of those holidays that sneak up on your wallet.

You don’t give gifts like you would for Christmas or Valentine’s Day, but between the costumes, the candy, and the decorations, the costs can get downright spooky. The average American plans to spend nearly $83 on Halloween shopping this year, up more than 10 percent from last year, according to the National Retail Federation.

There are plenty of simple ways to save money. You can shop at warehouse stores like Costco instead of drug stores. Or you can wait until Halloween day to go to a drug store and get as much as 50 percent off the price of candy and costumes, according to Andrea Woroch, a money-saving expert.

But there are other, less obvious ways to get into the Halloween spirit without racking up scary bills. Here are some suggestions.

Follow your favorite retailers. If you’re planning to purchase your costume at a pop-up or big box store, you may be able to get a discount if you sign up for that retailer’s email newsletter or follow it on social media sites such as Facebook, Twitter, Pinterest and Instagram.

“Retailers are starting to offer more exclusive deals to their mobile and social users,” says Brent Shelton, online shopping expert at FatWallet.com, which tracks deals available online.

The apparel retailer, Kohl's, for example, is selling select Halloween costumes at 15 percent off and if you sign up for its newsletter, you can get an extra 15 percent off your purchase.

At Spirit Halloween, you can get 20 percent off your Halloween shopping if you sign up for its email newsletter. 

Spirit Halloween is also offering discounts through social media. If you “like” the retailer on Facebook or follow it on Instagram, Pinterest or Twitter, the store gives you $10 off if you spend $40. 

Others, like Skittles and the craft store Michaels, are offering a variety of deals on candy and arts and crafts products on Facebook and Pinterest, which you can use to decorate for Halloween. 

Once you’ve completed your Halloween shopping, you can turn off email and social media notifications from these sites so you're not bombarded with marketing messages in the future.

Get a free dinner for the kids before trick or treating. In recent years, a growing number of restaurants have run promotions offering free or discounted meals to children on Halloween night. This year, Spaghetti Warehouse is offering free meals to kids dining in the restaurant from Oct. 29 through Oct. 31.  At Tijuana Flats, kids eat free on Halloween night and four adults can order one entree and one drink each for a total cost of $30.

Wait to pick your pumpkin. While many kids are anxious to start decorating and carving their pumpkins, it can be cheaper to wait until closer to Halloween. According to the U.S. Department of Agriculture, last year the average price of a pumpkin sold at a supermarket dropped from nearly $6 in early September to $4.41 by the last week of October.

This year, the average price is currently lower—$3.95 for a pumpkin. Of course, the price you pay depends on where you buy it.

"Pumpkins can cost twice as much per pound at a pumpkin patch," says Kendal Perez, a savings expert at CouponSherpa.com.

Think ahead to next year. Go Halloween shopping in November and you'll find items on deep discount that you can buy now and save for next year. By shopping ahead, you can stock up on decorations, accessories, and costumes at prices that can be as much as 50 percent to 75 percent off. This is particularly true at pop-up Halloween stores, which will discount items heavily in order to get them out the door before their short-term lease expires.