Sims 4, base game compatible, 2 items for box up & box down.
8 swatches each for box down and box up versions | Found in clutter & misc. decor | 5 Simoleons
To find quickly, type “popin” into the search query in buy/build mode. If you’re like me and have a lot of CC in your game, an easy way to find things is to search for the title of the item you’re looking for.