There were panels for the K-On x Ice no Mi (けいおんxアイスの実) Houkago Ice Time campaign in December 2012 at Akihabara Station. The panels were autographed by the seiyuu, and had short comments written on them.

Toyosaki Aki

Hikasa Youko

Satou Satomi

Kotobuki Minako

Taketatsu Ayana