Any gifts of this nature, even meals, are inappropriate for lawmakers. It may seems like a nice gesture, but our congressmen already get enough freebies.
I suggest listening to the latest TWiT, 49A where they talk with some guys from IPAC.
The iPods are given as campaign donations, with the intent of them being used for campaign related activites. That is how they're able to skirt around the gift limit for a congressmen, which is 50 bucks.