McDonald’s is throwing it back to the happiest of days.

The fast food chain’s famed Happy Meal is ringing in its 40th anniversary this year, after being introduced in the US in June 1979. To celebrate the milestone, the fast food brand is bringing back some of its most iconic Happy Meal toys from years past to slip inside the boxes from Nov. 7 to Nov. 11.

The limited-edition series is named the Surprise Happy Meal.

Some of the reboots include the purple- and yellow-colored Patti the Platypus Beanie Baby, which was released in 1997 at the height of the Beanie Babies craze.

As for other ’90s toys, which millennial customers will remember from their youth, there’s the 1995-released red Power Ranger, the 1996-released Space Jam Bugs Bunny, a My Little Pony doll from 1998 and, even better, a circa 1998 Tamagotchi e-pet.

Some of the reissued toys will be from the ’80s. Among those, while supplies last, will be three McNugget-shaped characters dressed as a cowboy, a fireman and a mail carrier.

Other McDonald’s-themed gets: iconic figures of Grimace and the Hamburglar.

A total of 15 toys will be available in 90 countries around the world, but US customers will get two extra Disney exclusives. One of them, the Sorcerer’s Apprentice Mickey Mouse, first came out in 2002. The other, a “101 Dalmatians” toy, was issued in 1997.

“Parents tell us how fondly they recall their favorite toys,” Colin Mitchell, McDonald’s senior vice president, global marketing, told USA Today. “So, unboxing the Surprise Happy Meal together creates a real moment of bonding with their children. We hope these toys are something that they will treasure and remember.”