Log in, then click the "Redeem Code" option at the "My Account" screen. Follow the directions, then enter one of the following codes to get the corresponding item.

Effect	Code
Cryptid backpack	batpackfeb09
Four Arms Bubblehead helmet	ffcfourarmspower
Friskerton Bubblehead helmet	ffcforestphantom
Humongousaur Bubblehead helmet	ffcben10dinosaur
Zak Saturday Bubblehead helmet	ffccryptidhunter