McDonald's has officially revived one of its most iconic Happy Meal toys from the 1980s, proving once and for all that nostalgia is the strongest flavour on the menu. The fast-food giant announced that the Changeables Happy Meal toys are back after nearly 40 years, launching Tuesday and instantly unlocking childhood memories people didn’t realize they were still emotionally attached to. Starting January 27, the classic toys that ruled the late ’80s and early ’90s are returning to restaurants for a limited time. There are 16 different Changeables to collect, and they transform into classic McDonald’s items. RELATED: Can a McDonald's Meal Actually Help Your Migraine?