The "goody bags" are commonly referred to as "amenity kits" and as mentioned, US' kit contains:
socks
earplugs
toothbrush/toothpaste
eyemask
lip balm
hand cream
You can actually buy them directly on the US Airways company store website -
http://www.usairwaysstore.com/Script...?idproduct=507
As for pajamas, no US carrier that I'm aware of provides them in any premium cabin. For *A international carriers, TG, SQ, OZ, LH, LX provide them in F (and you can take them home), NH provides them in F (but only for use on-board). I don't believe any *A carrier provides pajamas for C cabin pax.