When I bought my 2010 I got this same credit. I ended up with the heated seats (very easy install), slush mats, door sil gaurds, and mirror relocation kit. In hindsight I would not have gotten the relocation kit. Where it puts the mirrors you can't see anything out of the passenger side one.

 

I picked up my rubicon rock sliders. Tried for the bumper first but it was on backorder for 4 weeks and never came in.

 

On our 2010 we got: floor mats, cargo mat, gas door, grill inserts.
*My cargo mat is heavy and rubber like.
My 2011: summer combo top and I've got about $35 left to spend.

 

$500 Mopar bucks? I wonder if I got hosed out of that!