11 Best New Costco 4th of July Party Finds

Hosting a big Fourth of July gathering doesn’t have to mean a dozen separate shopping trips. Right now, Costco’s lineup covers grilling, games, snacks, and party supplies in one go, with a few genuinely impressive standouts like a 250th anniversary charcuterie kit and a 32-foot slip ‘n slide that’s basically a backyard centerpiece on its own. Whether you host year after year or this is your very first Independence Day bash, here are the eleven finds that’ll make your party a smash hit.

This kit comes loaded with 41.2 ounces of cheese, meats, and accompaniments, built specifically for the milestone anniversary. The Platterful 4th of July charcuterie kit doesn’t include a board, so plan on pairing it with something already in the cabinet. It’s $99.99.

A hinged hood means this griddle can double as a covered cooking surface or stay open for full searing power, depending on what’s on the menu. The Blackstone 36″ Omnivore griddle comes with a soft cover included and is $499—a serious upgrade for anyone planning to feed a crowd all season.

Built to handle outdoor conditions without warping or fading, this cornhole set is designed for repeated use rather than a single afternoon. The GoSports Tough Toss cornhole set is $159 and ready to anchor the backyard games lineup.

The classic marble-and-stick game gets a backyard-sized makeover here, which means more people can play and the stakes feel higher. This giant Kerplunk game is $69.99 and a good fit for mixed-age groups looking for something less competitive than cornhole.

Thirty-eight packs and 21 pounds of protein covers a serious amount of grilling without a second trip to the store. The Rastelli’s variety protein locker pack is $269.99—the kind of bulk order that makes sense when feeding a large group with varying tastes.

Gourmet blend wood pellets give grilled meats a more complex flavor than standard pellets, and 33 pounds is enough to get through several cookouts. These ones from Traeger are $26.99, and will make a meaningful difference when the meal is served.

A dedicated fire bowl set takes the guesswork out of s’mores night, with a setup designed specifically for roasting rather than just an open fire pit. The Solo Stove s’mores fire bowl set is $58.99 and a nice way to extend the evening once the fireworks wind down.

Two hundred and forty cups means nobody’s washing dishes mid-party or running out before the fireworks start. These Kirkland Signature Chinet plastic cups in red are $12.99—a practical, low-cost addition to any party supply run.

This isn’t your slip ‘n slide from childhood. It’s 32 feet long with constant air inflation, built to hold up to a full day of kids and adults sliding repeatedly. The Wham-O constant air slip n slide is $239 and easily the most memorable item on this list.

Individual bags mean less mess and easier portion control than a shared family-size bag passed around all day. This Frito-Lay classic mix variety pack comes with 54 bags and is $23.49—an easy way to keep snacks flowing without much thought.

A 200-count bundle covers plates and napkins together, which simplifies the supply list considerably for a big gathering. The ArtStyle Beat the Heat paper plate and napkin bundle is $29.99 and themed appropriately for the holiday, with a popsicle, flamingo, and ice cream cone print.