Instructions
Use a Suit Swapper to put on the Attract Suit. Simply jump into one of these devices as Robin and, if the Attract Suit is needed for the area you are in, he will change into it.
Locate loose red, yellow and green bricks. These bricks will appear after some objects are destroyed. The colors, which match Robin's uniform, let you know that he can use them.
Position Robin so that he is facing toward the bricks.
Hold down the Z button. This will activate the Attract Suit's vacuum.
Move the crosshairs over the bricks. It can take a second or two for them to move, but they will fly into the Attract Suit. A counter on Robin's back keeps track of how many you've collected.
Collect 25 pieces, then find a container with a counter on it similar to Robin's. Interact with this container to deposit the collected pieces and create a new item or stud.