So, it occurred to me I still had a bunch of Level 12 Helmet codes for "Shoot Many Robots" from PAX East, and man, I do not think that game is fun for more than ten minutes. But if you do, enjoy!
MCCRW-WPR9T-R3Y3H-PGGTQ-JCK6Z
K29T7-FWRDJ-77J2D-CXF2Y-QMCRZ
MYV2T-WFWP9-PK3C6-GMMRF-HQT9Z
And just for the heck of it, this last one is backwards!
ZXRJ6-WRWH9-RDYHJ-CV3XR-G2WV4