Pause the game and select the „Enter Code” option.

Effect Code
———————————
Jay (High School) – XVTULS
Cole (High School) – SMMNCC
Kai (High School) – 2WYU16
Zane (High School) – 5NHRS5
Nya (Ceremonial Robes) – 8755Q9
Lloyd (Kendo) – H7HGT3
General #1 – EFZ2XR
Garmadon (Pajamas) – LLPQ6X