Press TRIANGLE during game play, select "Settings", and choose the "Unlockables" (the key figure) option. Then, unlock the following items in the toy chest and closet by entering the corresponding codes:

ITEM - CHEAT CODE
Angel Maine Coon and Angelic Wings - zficls
Ballerina Capuchin and Ballerina Outfit 2 - ntrcds
Cowboy Orangutan, Cowboy Hat, and Bandana - xwghio
Fairy Yorkie, Frilly Collar, Fairy Wings 2, Crown, and access to Fairy Yorkie at the Adoption Center - qqqqqz
Superhero Husky, Star T-shirt, and access to Superhero Husky in the Adoption Center - vvbnnm
Rockstar Boxer, Leather Jacket Suit, Spiked Collar 2, and access to the Rocksatr Boxer at the Adoption Center - uuuuuu
Cheerleader White Persian, Cheerleader Outfit, and Pom poms - abcdef
Rocket Abyssinian and Rocket Pack - aarrgh