I'm in for it, too. Ideas related to specific activities for the month would be ideal. Here's my rough thoughts:
Jan:
Armor in the snow? Feb: Something with chocolates / hearts (Valentine's Day)
Mar:
??
Apr: Wearing bunny ears / bunny tail / easter basket?
May: Mother's day thing??
Jun: Father's day thing??
Jul: American flag / fireworks / etc? (July 4th)
Aug:
Lifeguard dutySep: Working on something? Labor day theme?
Oct: pumpkin carving, with a sword
Nov: Veteran's Day or Thanksgiving ... ideas? Turkey carving with sword? Veteran's Day parade / salute?
Dec:
Christmas Tree / posing on the floorThe ones in bold/italic I already have possibly suitable pictures of.