This year the second best swag was from a booth in North Hall, where they were giving away foam battle axes. It might not have been the most valuable piece, but it was the coolest.
I actually got the best swag at CES, by far. I managed to talk the Hanlin people into lending me a V60. It's their new 6" ereader with a Sipix screen. You have to admit, an ereader trumps a foam axe.
I also got swag that hardly anyone else could have gotten: a RockChip branded polo shirt. I'll probably never wear it, but I plan to keep it around just in case I ever need to infiltrate RockChip.