Stamps in Super Mario 3D World + Bowser’s Fury are cute little collectibles scattered throughout the game. There is one stamp on every single level (and some inside houses on the level select screen). Some stamps are much better hidden than others, though.
At some points, you will run through the level and easily grab them, while other courses will have you replaying them over and over again. One of the more tricky levels to find the stamp on is World 2-2, Puffprod Peaks. Here is where the stamp is located.
Before you can access World 2-2, you will need to gather 15 green stars from previous levels to destroy the Bowser statue placed over the level.
Puffprod Peaks introduces the use of touch screen or cursor functionality in Super Mario 3D World + Bowser’s Fury. You need to press on the colorful looking platforms to move them around and allow you to access areas. We are going to use this to find a secret room. Luckily, the place we need is right at the beginning of the level.
Go up the first two platforms so you find two moveable platforms positioned underneath question blocks. Interact with the second platform (the one Luigi is going to in the above image), walk underneath it, and wait for the platform to go back down. You will be transported to the secret room where you need to select the platform and jump up to grab the stamp you could have easily passed by earlier.