Sticker books! But before they made real sticker ones you had to cut out the “stickers” and either lick the back like a stamp or moisten with a cloth and then place it on the page. Horrible tasting glue for sure.
![Korean Airbnb [Seoul] // GLUE ADDICT 002 5](https://90kids.com/wp-content/uploads/2019/12/Korean-Airbnb-Seoul-GLUE-ADDICT-002.jpg.webp "Korean Airbnb [Seoul] // GLUE ADDICT 002 5")