30 of your favorite childhood snacks that no longer exist

• Kids of the '70s, '80s, and '90s have all taken to the web to wax poetic about the food they used to chow down on after school.
• Many of these beloved snacks, like Dunkaroos and Oatmeal Swirlers, have been discontinued.
• Petitions to bring many of these back abound.

Everyone likes a good walk down memory lane, whether it's remembering how different the world used to be, to seeing what formerly commonplace items have become obsolete.

But its not just everyday items that become obsolete: snacks, too, can go the way of the dodo.

From Dunkaroos to Crystal Pepsi, many items that used to grace pantries across the country are no longer available.

Keep scrolling to see how many of these 30 snacks you remember whipping out of your lunch box.

Wonder Balls were chocolate balls with toys — and later candy — inside.

Originally called Nestlé Magic, these chocolate balls, which contained a toy inside, were sold in the '90s. However, they were discontinued in 1997 for presenting a "choking hazard."

They re-emerged as the Wonder Ball in 2000, but filled with candy instead of a toy, and were discontinued once more in 2017.

You can buy Disney-themed ones on Amazon, but customers complain that the chocolate seems old and that the balls frequently come smashed.

Watch an ad for Wonder Balls here.

Hi-C Ecto Cooler was a Hi-C flavor created specifically for the "Ghostbusters" franchise in 1987.

Hi-C (a brand of fruit-flavored juice boxes) created the Ecto Cooler, a tangerine flavor, for the "Ghostbusters" franchise. Iconic character Slimer was even featured in the ads.

From 1987 to 2001, the drink flew off shelves, until Coca-Cola decided to discontinue the drink. However, it was briefly brought back in honor of the 2016 female reboot of the franchise.

Watch an ad for Ecto Coolers here.

Nabisco Swiss Cheese Crackers had the look of Swiss cheese, but didn't quite have the taste down.

The only thing that differentiated these "Swiss cheese" crackers from Cheez-Its were their holes. While they were popular in the 1980s, they were discontinued in the US — but apparently a similar version is sold in Canada.