From the Super Mario Wiki, the Mario encyclopedia
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The two Mini Peaches start in the left portion of the level, while the Mini Mario starts on the right side. Many Red Girder Rivets and several Circus Kongs are scattered on the platforms between the toys. A long pit with spikes lies before the Goal Door on the left, as well as two Rivets to connect a bridge over the pit. However, the player does not initially have enough Red Girder pieces to build it. These can be acquired by collecting the Girder Pickups under the rightmost Circus Kong, close to the Mini Mario.
The toys can use the Circus Kongs to their advantage to collect bonuses. However, in some situations, they have to be stunned with a pair of Hammers to gain passage to other objects. The Circus Kong in the middle can be used to reach the Hammers.
The M Coin is directly above the Circus Kong on the left. Only the enemy can help the Minis reach the coin by juggling them upward. There are two Rivets around the M Coin between which the player can build a Red Girder to separate the Minis from the Circus Kong's control.