Heart

The Heart is an item introduced in Mario Kart: Double Dash!!. It is Princess Peach and Princess Daisy's special item, though the latter gets her own variant in newer games called the Flower. It creates a barrier that allows players to steal random items.

Koopa Kart: Double Trouble!!
The Heart is Lakitu and Wiggler's Special Item in Koopa Kart: Double Trouble!!. It can be obtained from 2nd to 6th place. When used, two hearts will orbit the kart, allowing the player to pick up two items and use them for themselves. It cannot pick up Blue Spiny Shells or Chain Chomps, and if Lightning strikes or the player falls off the course, the barrier will be destroyed.

Koopa Kart Tour
The Heart returns as Wiggler, Princess Sasha, Wendy O. Koopa, and Baby Sasha's Special Item in Koopa Kart Tour (due to the fact that Lakitu has the Rain Cloud as his new Special Item), where it is once again obtainable from 2nd to 6th place. It serves the same purpose as before. However, it is now red instead of pink.