How do you get free mopod codes

Black Pearl: Jkydpd7xctdr
The Haunted Crown: 33r3hdhd8t6y
Sneeze Flute of Pepper Geyser: 9g4k3p9mltfp
Shimmery Sapphire: X4d8u834e3xf
Sword of Awesome: 9mt4gmc4nm4y
18 Karat Shiny Parrot: N8ad6679t7cy
Bag of Eggs: 6gw7areyh49u
Goblet Gulch: R7ckafnjdpgu
Map of Monstro City Poster: Monstrocity1