I've worked at Costco for 18 years. Here are 10 of the best things I'm seeing on the shelves this month.

The Myprotein Clear whey-isolate lemonade can be a great way to get your protein in.

Each serving of the sugar-free isolate, which tastes just like lemonade, has 80 calories and 20 grams of protein. To use it, add a scoop to a bottle of water, shake, and drink.

The Myprotein whey isolate is usually $30, but it's on sale for $21 at my store until August 18.

The Nike men's crew-neck sweatshirts are available at Costco, so stock up now — they usually fly off the shelves when they drop.

My store carries black, charcoal, blue, and gray sweatshirts in various sizes. At my warehouse, these sweatshirts are $33.

The Kirkland Signature tempura-shrimp taco kit is one of the newest premade items in the deli section.

This meal comes with everything you need to make tacos, including tail-off breaded shrimp, a cilantro-lime crema, shredded vegetables, 12 corn and flour tortillas, and pico de gallo.

The kit costs $6 per pound, which comes out to just under $20. 

This month, you can prepare for the fall season with Halloween- and harvest-themed decorative pillows.

Shoppers can choose from several designs, including ghost, pumpkin, batty-moon (a pattern featuring black bats on an orange background), and Scottish-harvest (a pattern featuring colorful pumpkins on a cream background) pillows.

These pillows can easily be spot-cleaned with a wet cloth and cost $10 each at my store.

This Hydro Flask two-pack, priced at $50, is a deal you won't want to miss.

This particular set includes one 40-ounce all-around traveler tumbler with a straw and a 32-ounce wide-mouth bottle. These stainless-steel bottles are great for keeping drinks cold and are dishwasher-safe.

My warehouse is selling black, white, and blue Hydro Flask sets.

The Costco bakery has released another summer item: the orange-Dreamsicle cheesecake. This cheesecake is different from any other dessert I've seen at Costco.

It has an orange-vanilla batter, a sweet graham crust, and a creamy whipped topping. At my store, each cheesecake is $23.

Prepare for cold days with the Weatherproof vintage summit outdoor blanket. The water-resistant blanket features a detachable hood and fleece lining.

Each blanket measures 54 inches by 72 inches, so it's perfect for sharing or using alone. The Weatherproof summit blanket is $30 at my store.

If you're looking for a good dip, look no further. Rojo's street-corn dip, made with corn, green chiles, and cheddar and cotija cheese, is full of flavor.

The mildly spicy dip can be served hot or cold. It comes in a resealable tub and can be found in Costco's deli coolers — each container is $9 at my warehouse.

These 20-inch "The Nightmare Before Christmas" Squishmallow plush toys are inspired by characters from the Halloween movie and are made with polyester and spandex filling.

Customers can choose from Jack Skellington, Sally, Oogie Boogie, and Zero Squishmallows. At my store, each plush toy is $33.

Back-to-school season is here, and Costco has a great deal on men's and women's Adidas sneakers.

My warehouse carries women's sneakers in a pink-and-black design and men's shoes in black and white colors. The Adidas sneakers are normally $35 but are on sale for $28 at my warehouse until August 25.