Travis Hafner
http://mlb.mlb.com/team/player.jsp?player_id=400098#gameType='R'§ionType=career&statType=1&season=2012&level='MLB‘
This guy was a monster back in the early 2000′s hitting bombs and sporting a .300 average. He hit .228 last year, but also hit 12 home runs. He still has power and could probably hit around .270 or so, which is respectable. He is 35 and really would only be able to play 1B. He could offer a backup to LoMo, or even insurance if he gets hurt again.
The other thing that I like about this is he gives us a lot more pop and we could slide LoMo over to LF giving us a power lineup when we need it. You could slide JP to CF and have Stanton in RF – gives us a lot to play with. May not take too much to sign him but would strictly offer more depth and not an everyday player.