I received an Exped pillow for Christmas last year and I like it for when I’m on the ground.  Packs up to nothing and better than a stuff sack with clothes in it.

The problem is I have started to hang in a hammock and I find that I don’t need much of a pillow in the hammock.  I only put about a half a breath of air into the pillow then vs. two full ones when on the ground.