The Candy Spirit Shield is custom spirit shield with some small stat bonuses. Its small bonuses combined with its relative rarity means that it generally isn't used for combat, but instead for fashion.
You can get this shield by buying it from Roachey, north of ::home, for 60 donator points.
Currently, it is dropped by the following boss:
At the moment, the price of Candy Spirit Shield is roughly: 500K DScoins